09. Characoids: tetra relationship (486)

  • Hydrolycus armatus Orinoco

    13. June 2024

    Once more we were able to import this breathtaking animal from the Rio Orinoco. Anyone who is interested in this species should take the chance now, because this fish is available only a few weeks each year. For more informations on the species please see https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/hydrolycus_armatus_en-2/ and https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/hydrolycus_armatus_en/ For our customers: the animals have code […]

  • Nannostomus trifasciatus

    6. May 2024

    Sometimes you almost forget how incredibly beautiful traditional aquarium fish are due to the large number of interesting and colorful new imports.  The Threestripe pencilfish, Nannostomus trifasciatus, is one of the most beautiful of them all. According to the huge distribution area of the species (Bolivia, Brazil, Guyana and Peru), there are numerous color variants […]

  • Serrasalmus eigenmanni

    6. May 2024

    The systematics of piranhas is undisputedly one of the most complicated and complex sub-disciplines of fish science (ichthyology). There are several reasons for this. Piranhas are extremely common and conspicuous fish that are very easy to catch. As early as the 18th and 19th centuries, several species were described and named, often based on individual […]

  • Hemigrammus rubrostriatus

    4. April 2024

    In the past, we were only able to present this beautiful tetra, which was only scientifically described in 2015, as a rare by-catch (e.g. https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/hemigrammus-rubrostriatus/). However, we are now able to import these beautiful fish from Venezuela on a regular basis, as we have done again recently. The approximately 4-5 cm long animals are fully […]

  • Hemigrammus hyanuary Wild

    28. March 2024

    In 1957, when the first Green Tetras or Neon Costello (Hemigrammus hyanuary) were imported, the tetras were absolute fashion fish. Otherwise the comparison with the neon or cardinal tetra can hardly be explained, because H. hyanuary – which by the way is named after Lake Hyanuary in Brazil – is really nicely colored, but it […]

  • Jupiaba anteroides – follow-up

    8. March 2024

    We recently introduced you to the Jupiaba anteroides from the Rio Cenepa in Peru, which we imported recognized for the first time (see: https://www.aquariumglaser.de/en/fisharchive/jupiaba-anteroides-2/)  In the meantime, the few specimens still remaining with us have got into the mating mood and the males have taken on a quite astonishing mating coloration with a tomato-red belly. […]

  • Jupiaba anteroides

    7. February 2024

    For a variety of reasons, aquariums were predominantly small until the 1960s and held 10-100 liters of water. Accordingly, aquarists focused on small fish. It was only when the cichlids of Lake Malawi were imported that the trend changed. These “coral fish of freshwater” need large tanks due to their high intraspecific aggressiveness and soon […]

  • Nannostomus sp. Cenepa Super Red

    19. January 2024

    Recently we could present you a magnificent, deep red new pencil fish (see https://www.aquariumglaser.de/en/fish-archives/nannostomus-sp-super-red-2/). Thereby we mentioned a second species, the “Cenepa Super Red”, which we unfortunately only knew from internet pictures at that time. We now manage to import these magnificent animals on a regular basis. The “Cenepa Super Red” differs from the “Super […]

  • Moenkhausia cosmops

    3. January 2024

    After many years, we have once again received one of the most extraordinary tetras in Brazil: Moenkhausia cosmops. This species was only scientifically described in 2007. Until now it has only been known from the upper reaches of the Rio Paraguai and Rio Tapajos basins in the state of Mato Grosso: Rio Juba, Rio Juruena, […]

  • Inpaichthys sp. “Red Eye”

    24. November 2023

    It’s amazing how many new and extraordinarily beautiful tetra species have appeared in recent years. Among them is an Inpaichthys species that has not yet been scientifically recognized and is referred to as the “Red Eye” by those who catch it. The I. sp. “Red Eye” differs from the well-known king tetra (I. kerri) not […]

  • Hyphessobrycon epicharis (2)

    20. November 2023

    We recently succeeded in importing the species Hyphessobrycon epicharis, which had previously only been imported in very small numbers (see https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/hyphessobrycon-epicharis-2/ and https://www.youtube.com/watch?v=RBofRyOLk3g). Now we have succeeded in importing once more that species that is unmistakable due to its distinctive shoulder spot.  This time the animals are somewhat smaller (and therefore cheaper), but more colorful. […]

  • Micralestes humilis ( = “M. stormsi”)

    17. November 2023

    Unfortunately, Micralestes humilis from Nigeria is only offered relatively rarely. This species, which belongs to the Congo tetras, is a wonderful contrasting fish for West African aquaria. The bright red adipose fin of this species is particularly striking. On the one hand, it serves to keep the shoal together, but is also confusing for predatory […]

  • Crenuchus spilurus

    15. November 2023

    Crenuchus spilurus is the only formally described species of the genus Crenuchus. There is, of course, at least one other species in Venezuela (see https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/a_new_species_of_crenuchus__en/). C. spilurus was originally described from the Essequibo River in Guyana. We have now once again received extremely beautiful specimens from Manaus (Brazil). In contrast to almost all other tetras, […]

  • Paracheirodon simulans lg-xl

    13. November 2023

    The internationally since always Green Neon, in German also occasionally Blue Neon (to avoid confusion with Hemigrammus hyanuary, which is also called Green Neon) called Neon tetra Paracheirodon simulans we have more or less always in our assortment, see https://www.aquariumglaser.de/en/09-characoids-tetra-relationship/paracheirodon-simulans-2/ Now we have received from our supplier in Colombia comparatively extremely large specimens, as we […]

  • Serrasalmus irritans

    30. October 2023

    Serrasalmus irritans is a slender piranha, described by the first describer Peters in 1877 as follows: “The area above the lateral line spotted black-blue. The caudal fin with a broad black-blue band enclosing the middle of the base, the broad margin yellow-white; the anal fin reddish, black at the margin. A specimen, 17 centimeters long, […]

  • Piabucus melanostoma

    16. October 2023

    From Paraguay we received large (10-12 cm), unusual tetras. These elegant animals can be assigned without problems to the genus Piabucus, which according to current knowledge includes three species. Two of them are supposed to occur also in Paraguay, namely P. dentatus and P. melanostoma. In the past, it was thought that the two species […]

  • Thoracocharax stellatus

    16. October 2023

    The platinum hatchetfish, Thoracocharax stellatus, is one of the more commonly imported yet mysterious species within the hatchetfish family. It appears to have an extremely wide distribution in South America. Scientific evidence exists from Argentina, Bolivia, Brazil, Colombia, Uruguay, Ecuador, Paraguay, Peru and Venezuela. So, regardless of state boundaries, these are the Paraguay/Paraná, Amazon and […]

  • Hemigrammus coeruleus

    29. September 2023

    Although Hemigrammus coeruleus has a very wide distribution in Amazonia (Brazil, Ecuador, Colombia) and was scientifically described as early as 1908, it only entered aquariums in the early 2000s (at least recognized). H. coeruleus is a fish with two faces: in neutral mood it is pretty, but not spectacular and looks like a mixture of […]

  • Hyphessobrycon rosaceus (“ornatus”)

    22. September 2023

    In 1997, the US ichthyologists Stanley Weitzman and Lisa Palmer published a scientific paper that caused a sensation among experts. In it, they described the new species Hyphessobrycon epicharis, but also commented in detail on a relationship group within the South American small tetras known as the “rosy tetra clade”. The authors showed, among other […]

  • Nematobrycon palmeri WILD

    15. September 2023

    The Emperor Tetra (Nematobrycon palmeri) has been one of the most popular tetra species for decades due to its beauty and interesting behavior, and is available year-round as a captive breed. Wild catches, on the other hand, are only available for a limited time and on a seasonal basis. We have now once again received […]

  • Hemigrammus luelingi

    11. September 2023

    Head-and-Taillight tetras were introduced to Germany as early as 1910 and were also bred soon after. They soon belonged to the iron stock of ornamental fish. Since then there are practically no more wild-caught imports. Now we have received head-and-taillights from Peru, which we initially mistakenly determined to be wild Hemigrammus ocellifer. Tetra specialist Flávio […]

  • Thayeria sp. Red Tail Teles Pires

    1. September 2023

    Penguin tetras (Thayeria) are well known aquarium fishes. Of the scientifically accepted four species (T. boehlkei, T. ifati, T. obliqua, T. tapajonica) T. boehlkei is always on offer in the ornamental fish trade. Almost all of them are offsprings, although the species is widely distributed in South America (Peru, Ecuador, Brazil and Bolivia). The Rio […]

  • Leporinus pellegrinii

    23. August 2023

    The large genus Leporinus comprises more than 90 species and still confronts science with hardly solvable problems concerning the delimitation of the species. Among the groups of species known for decades as particularly complicated is the group of forms around Leporinus maculatus. These are Leporinus, where at least a part of the flank pattern consists […]

  • Hyphessobrycon haraldschultzi

    11. August 2023

    After a long time we could finally import some of the beautiful Hyphessobrycon haraldschultzi from the Rio Araguaia in Brazil. The animals are clearly slimmer than serpa tetras (H. eques, “serpae”, “minor” etc.). The coloration is more reminiscent of H. amandae, because the red is – unlike serpa tetras – not a rich blood red […]

  • Boulengerella maculata

    9. August 2023

    The elegant predatory tetras of the genus Boulengerella are divided into 5 species: B. cuvieri, B. lateristriga, B. lucius, B. maculata and B. xyrekes. They are widely distributed in the major river systems of Amazon and Orinoco. Distinguishing the species is not easy, especially with juveniles.  We just received from Peru pretty 10-12 cm long […]

  • Hemigrammus falsus

    5. August 2023

    Head-and-Tail light tetras were introduced to Germany as early as 1910 and were also bred soon after. They soon belonged to the iron stock of ornamental fish. These first head-and-taillight tetras were identified as Hemigrammus ocellifer. In 1958 Hermann Meinken noticed that the head-and-taillight tetra in the hobby does not have a shoulder spot, but […]

  • Hemigrammus ocellifer

    5. August 2023

    Head-and-Tail light tetras were introduced to Germany as early as 1910 and were also bred soon after. They soon belonged to the iron stock of ornamental fish. These first head-and-taillight tetras were identified as Hemigrammus ocellifer. In 1958 Hermann Meinken noticed that the head-and-taillight tetra in the hobby does not have a shoulder spot, but […]

  • Hyphessobrycon pyrrhonotus 

    28. July 2023

    The handsome red-backed bleeding heart tetra of the bleeding heart tetra group (three scientifically known species to date) is the most recently discovered, and was only described by Burgess in 1993. The males having elongated dorsal fins and a very handsome and conspicuous red dorsal, less pronounced also the females.  A successful breeding has not […]

  • Brycon hilarii

    30. June 2023

    Every year is the season for a desirable fish for large show aquariums: Salminus maxillosus. And every year after the import of juveniles the question arises: are they really? Because the mostly up to 60 cm (maximum 1 m) long Salminus – they are pure predators, which feed only on other fish – imitate in […]

  • Iguanodectes spilurus

    9. June 2023

    From Colombia we received Iguanodectes spilurus. This brings the number of Iguanodectes species imported by us in recent times to four: the red-striped I. geisleri and I. adujai, the three-striped I. purusii and now the golden-striped I. spilurus.  The lizard bite tetras (Iguanodectidae) are a peculiar family of South American tetras that got their scientific […]

  • Gasteropelecus sternicla

    24. May 2023

    The so-called common hatchetfish Gasteropelecus sternicla is found in practically the entire tropical area of South America. In this huge area probably different genetic lines have developed. In any case, it is extremely unlikely that this is not the case. Nevertheless, they look extremely similar everywhere: they are simply success models of evolution! A recent […]

  • Arnoldichthys spilopterus

    3. May 2023

    The African Red-eyed Tetra is one of the few permanently available tetra species from tropical Africa; the species lives endemically in Nigeria, so it is found only there. The species owes this to its magnificent appearance and the fact that it is very easy to keep. Unfortunately, the species is now considered endangered in parts […]

  • Aphyocharax anisitsi 

    19. April 2023

    One of the very first tetra species ever imported for aquaristics was the red fin tetra, Aphyocharax anisitsi. Its first import was in 1906 and it soon succeeded in breeding, making further imports unnecessary. It is very likely that the redfin tetras living in the aquarium today are also descendants of these first import fish. […]

  • Hyphessobrycon erythrostigma

    14. April 2023

    The “Peru Bleeding Heart” (Hyphessobrycon erythrostigma) is exported primarily from Peru, but is quite widely distributed in the upper Amazon and is also found in Brazil, Ecuador, and Colombia.  The three species of bleeding hearts are closely related and look very similar. H. pyrrhonotus is the easiest to recognize because it has a blood red stripe […]

  • Semaprochilodus laticeps “taeniurus”

    6. April 2023

    We have received beautiful Semaprochilodus from Colombia. Unfortunately the naming of the Semaprochilodus species was very wrong in the past. According to current knowledge, our animals are definitely S. laticeps. In the aquaristic literature and in the internet the species is mostly called S. taeniurus (this is another species from Brazil) or S. theraponura (this […]

  • Astyanax mexicanus

    27. March 2023

    The tetra Astyanax fasciatus is – if one follows the literature until the recent past – the most widespread fish in America, from the Rio Negro in Argentina to the Rio Grande in Texas. This was doubted early on, but the similarity of these fish was enormous no matter where they were caught. Only a […]

  • Hyphessobrycon jackrobertsi

    10. March 2023

    Already since 1958 a tetra from Peru enjoys great popularity among aquarists under the fantasy name “Hyphessobrycon robertsi”. The males like to impress each other with their enormously extended dorsal fins, which led to the German common name “Sichelsalmler” (= sickle tetra). However, the species was not scientifically named for a long time. In a study on the relationship of the „rosy tetras”, to which the robertsi-tetra belongs, the scientists Stanley Weitzman and Lisa Palmer assumed in 1997 that the animals were the same species as Hyphessobrycon bentosi.

    Then Axel Zarske of the Senckenberg Museum presented a new study in 2014 in which he identified differences between Hyphessobrycon bentosi and the robertsi-tetra. He concluded that the two belong to different species and described the robertsi-tetra with the valid name Hyphessobrycon jackrobertsi. With this Zarske honors the discoverer of the species, Jack Roberts from Miami, who was already meant with the invalid name “robertsi”.

    We just have again beautiful young adult wild specimens of the species in the stock. The type specimens for the first description of H. jackrobertsi originated also from our fishhouse.

    For our customers: the animals have code 261703 on our stocklist. Please note that we supply exclusively to wholesalers.

    Text & Photos: Frank Schäfer

  • Leporinus sexstriatus

    8. March 2023

    The species-rich genus Leporinus includes some quite large trout-sized species, which are therefore, despite their beauty, rather used as food fish than as ornamental fish. However, there are also species that remain small, such as Leporinus sexstriatus, which reaches only 10-12 cm. This small Leporinus is a zoological rarity, because the species has only a […]

  • Leporellus vittatus

    3. March 2023

    Finally we were once more able to import some of the very rarely offered Leporellus vittatus from the Rio Xingu in Brazil. This extraordinary species attains a length of approximately 25 cm and belongs to the headstander tetra relationship. However, in Leporellus the air bladder is mostly reduced and so the fish live strictly bottom […]

  • Aphyoditeinae gen. sp. Morse tetra

    17. February 2023

    The unusual term “Aphyoditeinae” is a collective term for small-sized tetra genera in the form of a subfamily, which could not be reasonably placed anywhere else. The world-renowned tetra specialist Jaques Géry introduced the term in 1972 in reference to the genus Aphyodite, but not as a subgenus, but as a vaguely defined term Aphyoditeini. […]

  • Carnegiella strigata lg-xlg

    13. February 2023

    The marble hatchetfish (Carnegiella strigata) is a very common, small-bodied surface fish in the wild. Its maximum length is about 4.5 cm. A very dark form (“vesca”) comes from the upper Amazon (Peru) , a lighter, more delicately marked one from the middle Amazon (Brazil). For “vesca” see here: https://www.aquariumglaser.de/en/fish-archives/carnegiella-strigata-vesca-2/ From Brazil we have just […]

  • Lebiasina cf. multimaculata

    6. February 2023

    For the first time we could import large (10-12 cm), beautiful Lebiasina tetras from Colombia. The species identification is not completely sure. The animals originate from the Choco region in the south of Colombia; from there e.g. the emperor tetras Nematobrycon lacortei and N. palmeri are exported regularly, between which also young individuals of Lebiasina […]

  • Hoplocharax goethei

    23. December 2022

    Do you know this tetra? The species is unusual in several respects! First of all there is its strange species name, goethei. Was the species named after our poet prince and universal genius, Johann Wolfgang von Goethe? Unfortunately no. It was dedicated to the controversial eugenicist Charles Matthias Goethe (1875-1966). But that is rather beside […]

  • Cyphocharax multilineatus

    15. December 2022

    This interesting species, which we obtained from Venezuela, belongs to the Curimata-relationship. At the first glimps it reminds one strongly to the well known headstander (Chilodus punctatus), but it can be easily recognized by the black stripe through the eye. Moreover, Cyphocharax swims in a “normal” horizontal way.

    Cyphocharax feed on Aufwuchs and look the whole day through on stones, roots, and plants for algae and the small animals inside them. Against each other C. multilineatus are very peaceful. Maximum length reported for the species is about 10 cm.

    We have also made a small film about these fish, which you can watch here: https://www.youtube.com/watch?v=9uaKiKAcnTI

    For our customers: the fish has code 251353 on our stocklist. Please note that we exclusively supply the wholesale trade.

    Lexicon: Cyphocharax: from ancient Greek, means “Charax with a hump”; Charax is another genus of tetra. multilineatus: Latin, means “with many stripes”. Chilodus: ancient Greek, means “with teeth on the lips”. punctatus: Latin, means “spotted”.

    Suggestion of a common name: Golden Mascara Tetra

    Text & photos: Frank Schäfer

  • Cyphocharax multilineatus

    21. November 2022

    This interesting species, which we obtained from Venezuela, belongs to the Curimata-relationship. At the first glimps it reminds one strongly to the well known headstander (Chilodus punctatus), but it can be easily recognized by the black stripe through the eye. Moreover, Cyphocharax swims in a “normal” horizontal way. Cyphocharax feed on Aufwuchs and look the […]

  • Charax cf. michaeli

    16. November 2022

    There is a conspicuous group of tetras in South America, which we will call “humpback tetras”. They have attracted the interest of researchers since the beginning of fish science (ichthyology), but proved to be a very difficult group in terms of their relationship classification. There are three genera of humpback tetras, which can hardly be […]

  • Nannostomus eques Peru

    24. October 2022

    The tetras of the genus Nannostomus, called pencil fish because of their somewhat stiff swimming style reminiscent of traveling zeppelins, have been among the most popular ornamental fish for decades. They are very beautiful, usually peaceful and remain small. Three species swim at an angle with their heads up: Nannostomus eques, N. britzkii and N. […]

  • Curimatopsis evelynae

    14. October 2022

    The tetras of the genus Curimatopsis are widely distributed in South America. The prettiest species is C. evelynae. Nevertheless, this attractive fish has hardly found its way into aquariums so far. C. evelynae grows to a maximum length of 4 cm. The males can be recognized by their clearly higher caudal peduncle, furthermore the females […]

  • Hypomasticus julii

    7. October 2022

    In 1996, ichthyologists Santos, Jegu, and Lima described an unusual Leporinus from the Rio Xingu and Trombetas as L. julii. The new species is closely related to L. pachycheilus, an extremely color variable Leporinus species. Unique to L. julii, which was named in honor of Júlio Garavello, is the completely underslung mouth and teeth position. In 2008 the subgenus Hypomasticus, which was already established for Leporinus mormyrops in 1929, was elevated to generic rank and 12 species from the large collective genus Leporinus were assigned to it.

    For the first time we were able to import 2 specimens of this rapids inhabitant from the Rio Xingu. In the photographic aquarium they behaved like two too large ground tetras, sitting on the bottom and supporting themselves with their strong pelvic fins. It can be assumed that in nature they have to swim strongly against the current and graze stones. Our two specimens are somewhat differently colored, one animal is darker than the other and has a strikingly different colored adipose fin. We do not know if this is a sex difference.

    In the photographic aquarium the animals, in which intense red spots in the corner of the mouth and in the shoulder area are very conspicuous color features, were rather uninterested in each other, but the darker animal shooed the lighter specimen energetically out of its immediate vicinity after a certain period of acclimation. Because of the known tendency of Leporinus to quarrel, we have housed them separately in our fish house anyway.

    The maximum length of the species is about 20 cm (standard length without tail fin).

    For our customers: the animals have code 262205 on our stocklist. Please note that we only supply wholesale.

    Text & photos: Frank Schäfer

  • Thayeria obliqua

    28. September 2022

    Unfortunately the beautiful penguin tetra, Thayeria obliqua, from the upper Amazon is offered only very rarely, in contrast to its cousin T. boehlkei, which can always be found in the trade. In the trade are only offsprings of T. boehlkei; it originates from the Rio Xingu drainage in Brazil. A third species, T. ifati from […]

  • Pyrrhulina spilota

    2. September 2022

    The tetras belonging to the genus Pyrrhulina combine the advantages of two basic groups of ornamental fish. The first group are the schooling species that are always visible and swim merely in the open water: tetras and barbs. The second group has a fascinating behaviour and takes care for the brood: the cichlids and the […]

  • Carnegiella strigata-vesca

    24. August 2022

    The marble hatchetfish (Carnegiella strigata) is the ideal aquarium fish. It remains small (4 cm), is peaceful and has an interesting coloration. The species is widely distributed in South America (Brazil, Ecuador, Bolivia, Colombia, Guyana, Peru and Suriname) and common. That is why it is almost always found in the offer of the ornamental fish […]

  • Hyphessobrycon epicharis

    19. August 2022

    Since the first scientific description of Hyphessobrycon epicharis in 1997, this species is on the dream list of many tetra enthusiasts. Unique feature of this Rosy tetra is the shape of the shoulder spot, which distinguishes it from all other species.  The specimens on which the first description was based came from the upper reaches […]

  • Gymnocorymbus bondi (formerly: G. socolofi)

    19. August 2022

    It has been a long time since we could import the last time the beautiful tetra Gymnocorymbus bondi from Colombia. Very small animals remind strikingly of the Yellow Tetra (Hyphessobrycon bifasciatus), but with increasing growth the shape changes more and more to the one known from Gymnocorymbus. Now we finally got this orangefin tetra once […]

  • Iguanodectes purusii

    3. August 2022

    Four species of the peculiar lizard tetras (Iguanodectes) are imported from time to time: I. spilurus, I. adujai, I. geisleri and I. purusii. But altogether there are eight accepted species and because of the similarity of these fishes and their wide distribution it is not always so sure if the classification of the imports is […]

  • Moenkhausia pittieri

    21. July 2022

    The diamond tetra (Moenkhausia pittieri) has been in the hobby since 1933. The species lives endemically in Lake Valencia in Venezuela, so it only occurs there (including some inflows and outflows). Usually it is only in the trade as offspring, very rarely a few wild catches come in.  At first sight the diamond tetra may […]

  • Ammocryptocharax elegans

    15. July 2022

    There is probably no other freshwater fish that can show such a poisonous green as body coloration as the about 4-5 cm long ground tetra Ammocryptocharax elegans, which we were able to import in small numbers from the Orinoco darinage (Colombia/Venezuela). However, the animals have an extreme color change ability and if they sense danger, […]

  • Myloplus schomburgkii

    15. July 2022

    We have reported about this magnificent tetra more often, e.g. here: https://www.aquariumglaser.de/en/fish-archives/myleus_schomburgkii_en/ and here: https://www.aquariumglaser.de/en/fish-archives/myleus_schomburgkii_wild_en/ Now we have received young sexed animals of the narrow-banded form (species?), 12-15 cm long. The males have developed – in addition to the modified anal fins, typical for sexually mature Myloplus males – black horizontal banding on the ventral […]

  • Pygocentrus ternetzi

    8. July 2022

    To say it right away: yes, we also know that the species P. ternetzi is currently seen by most ichthyologists as a synonym of P. nattereri. This assessment is based on the fact that the “true” Pygocentrus nattereri is the yellow-breasted species from the drainage of the Rio Paraguay (type locality of P. nattereri described […]

  • Paracheirodon innesi Wild

    6. July 2022

    You think these neon tetras are nothing special? They are! They are wild collected ones from Peru! Although for sure 99.99% of all neon tetras traded worldwide are bred ones the species is still very common in the wild. And so every now and then they are sent to Europe as ambassadors of their kind. […]

  • Cynodon gibbus

    4. July 2022

    Only very rarely this “vampire predator tetra” gets into our tanks, because this species is extremely sensitive. So we are of course especially pleased that our specimens are very stable and in good health. We received the animals from Peru. Cynodon gibbus is a predatory fish that feeds on small fish. The species is very […]

  • Nannostomus sp “Super Red“

    24. June 2022

    Since a few weeks pictures of bright red Nannostomus are circulating, which seem to be unnaturally colorful. However, these are actually wild forms from Peru, which are very close to or even identical with the Nannostomus rubrocaudatus (the “Purple”), which is also found there. Like the latter, the novelties have a prominent black spot in […]

  • Hyphessobrycon micropterus

    24. June 2022

    Again we succeeded in importing the unfortunately very rarely offered, very attractive Hyphessobrycon micropterus from the Rio Sao Francisco in Brazil.  For more information please see: https://www.aquariumglaser.de/en/fish-archives/hyphessobrycon-micropterus-2/ The pictures in this post show animals from our current stock (June 2022). For our customers: the animals have code 261853 on our stock list. Please note that […]

  • Leporinus sp. “Strawberry” Bred

    22. June 2022

    So far we could import this probably most beautiful of all Leporinus only once: Leporinus sp. “Strawberry”. That was in the season 2010/2011, in which we managed two imports in small numbers. For these fishes please see https://www.aquariumglaser.de/en/fish-archives/leporinus_sp_strawberry__en/ An interesting side note: five of the fishes imported at that time we got back in top […]

  • Hyphessobrycon socolofi var. Green

    20. June 2022

    Only rather rarely – every few years – and if, then always in the summer months June-July-August, we receive Hyphessobrycon socolofi from Brazil, in which the back shines conspicuously green; besides, the second cherry-red spot on the tail root is colored particularly intensively red with these animals. We have been observing this phenomenon for many […]

  • Tyttocharax cochui

    3. June 2022

    Finally we were able to import once more one of the most charming dwarf tetras at all: Tyttocharax cochui. These very lively and absolutely peaceful blue flashes become only 1.5-2 cm long. The story how T. cochui was discovered is quite interesting.They were imported for the first time in April 1949 to Germany – as […]

  • Triportheus rotundatus

    13. May 2022

    The strange narrow hatchetfish of the genus Triportheus belong to the flying fishes of freshwater. This is already indicated by the mighty pectoral keel with the muscles attached to it and the very long pectoral fins. The fish are predominantly silvery colored and grow to about 15 cm in length, which is why they are […]

  • Hyphessobrycon takasei

    11. May 2022

    The Coffee Bean Tetra is an exceptional species within the so-called Rosy Tetras: no other species has even a hint of such a large shoulder spot. The distribution area of the species is in the lower Amazon basin, the border area between Brazil and French Guyana. There you can find the Coffee Bean Tetra in […]

  • Hyphessobrycon cyanotaenia – extra pretty wild catches

    14. April 2022

    The tetra Hyphessobrycon cyanotaenia was originally imported as “Lapis-Tetra” from Brazil; that was more than 20 years ago (see https://www.aquariumglaser.de/en/?s=cyanotaenia). Since the breeding was successful this beautiful and easy to keep fish is now a common sight in the trade. The origin was mysterious for a long time, because the scientific description was based on […]

  • Hyphessobrycon procyon

    8. April 2022

    One of the still very expensive tetra novelties in the aquarium is the very, very pretty Hyphessobrycon procyon from the Rio Aripuanã in the middle basin of the Rio Madeira. It looks confusingly similar to the kitty tetra, H. heliacus, at first glance. H. procyon and H. heliacus form a species complex together with the […]

  • Hyphessobrycon notidanos “Red Devil

    1. April 2022

    Hyphessobrycon notidanos from the upper drainage of the Rio Tapajós in Brazil, which was scientifically described only in 2006, is apparently a quite multicolored animal. So there is the “Red Devil” with much red in the body and blue iris and the “Yellow Devil” with red iris. Both color forms are said to occur together […]

  • Gasteropelecus sternicla Albino

    1. April 2022

    Hatchetfishes are normally wild caught. They are very common, easy to transport and therefore a welcome addition to the sustainable ornamental fish fishery in Venezuela, Colombia, Peru and Brazil. This is also true for the “Common” Hatchetfish, Gasteropelecus sternicla. For general information on the species, please also see https://www.aquariumglaser.de/fischarchiv/ein-grosser-klassiker-gasteropelecus-sternicla/. For some years now, offspring of […]

  • Hyphessobrycon negodagua

    25. March 2022

    At present the small tetras of South America experience a new boom. Numerous species have been and are being described scientifically. Thus also the ornamental fish collectors leave their beaten tracks and look for these animals, particularly since currently peppered prices are paid for the novelties. Naturally, such a thing only works for a short […]

  • Axelrodia stigmatias

    11. March 2022

    This cute dwarf tetra was described in 1913 from the Rio Madeira, where it was collected near Porto Velho. It is a typical companion fish of the two neon species Paracheirodon axelrodi and P. simulans and, as we know today, occurs throughout the range of the two neons, i.e. in the upper Orinoco and the […]

  • Hyphessobrycon melanostichos

    16. February 2022

    At the moment we can offer magnificent, fully grown bred specimens of Hyphessobrycon melanostichos. Hyphessobrycon melanostichos is very eye-catching due to its bright sky-blue back coloration. The species was scientifically described in 2006 from the Brazilian state of Mato Grosso, where it occurs in the upper drainage of the Rio Tapajós. The species is distinguished […]

  • Catoprion mento

    2. February 2022

    Finally we managed to import Wimple Piranhas (Catoprion mento) once again. In nature C. mento is a scale eater – at least at certain times. In terms of feeding, right now is a good time of year because there are plenty of live white mosquito larvae now, which are an ideal food for Wimple Piranhas. […]

  • Phenacogrammus cf. taeniatus

    28. January 2022

    A new fashion trend in the hobby is emerging: tetras from the Congo! The region was already often in the focus of the hobby, but it was about killifishes or cichlids. The large flock of silver glittering open water species was of less interest. With the discovery of the unbelievably colorful Phenacogrammus sp. “Fantastique” (in […]

  • Copella meinkeni

    26. January 2022

    These beautiful tetras were called Copella nattereri in literature for many years until a scientific study found that C. nattereri is in fact the species previously known as C. nigrofasciata and that the “C. nattereri” from the Orinoco and Rio Negro belong to a scientifically unnamed species called Copella meinkeni. We regularly offer this attractive […]

  • Nematobrycon lacortei

    21. January 2022

    The Rainbow Emperor Tetra (Nematobrycon lacortei) is certainly one of the most attractive tetras in South America. Its home is in western Colombia where it is caught in the catchment area of the Rio San Juan. Males and females can be easily distinguished by the color of the iris. Already in small juveniles the males […]

  • Myloplus torquatus

    21. January 2022

    From Venezuela we received very nice Myloplus torquatus. The up to approx. 25 cm long species is scientifically known for a very long time (since 1858) and in the course of time it was already assigned to the genera Myletes and Myleus. A very good recognition feature is the black fringe in the caudal fin, […]

  • Hyphessobrycon dorsalis

    21. January 2022

    Tetras, which – as Hans-Georg Evers so aptly put it – are magnificently white wine colored, have a hard time in aquarists. In the dealer’s tank there is usually nothing to be seen of the discreet colors and why, many ask, should one buy colorless fish when there are so many colorful species? This opinion […]

  • Sartor respectus

    4. January 2022

    From the Rio Xingu we could import the probably strangest of all headstander: Sartor respectus. Unfortunately there were only two specimens, which one of our employees acquired. Nevertheless we did not want to withhold this speciality from you, dear readers.  Sartor (there are two other very similar species, one from the Rio Trombetas (S. elongatus) […]

  • Hyphessobrycon moniliger

    9. December 2021

    Under the name “Hasemania hansseni” a new tetra has recently appeared on the market, which with its intense orange coloration is indeed somewhat reminiscent of the well-known copper tetra, Hasamania nana. However, one of the characteristics of the genus Hasemania is that it lacks the adipose fin that is so typical for tetras. This is […]

  • Characidium fasciatum (C. cf. pterostictum, P. sp. V)

    15. November 2021

    The South American darters of the genus Characidium are unfortunately almost indeterminable. There is no current revision of the 95 described species, but additional species are constantly being described and it is known that there are still numerous scientifically unrecorded species. In aquaristics one therefore helps oneself by simply calling everything “Characidium fasciatum”, well knowing […]

  • Serrasalmus cf. gouldingi

    27. October 2021

    It is indicative of the difficulties in piranha identification that this widespread species, which also occurs in an area intensively collected for the aquarium hobby (namely, the Rio Negro) was not scientifically described until 1992 and, moreover, almost never appears in the hobby. The terra typica is Anavilhanas, Río Negro, Brazil.  The representatives of this […]

  • Moenkhausia phaeonota

    22. October 2021

    This small (about 4 cm) species of tetra originates from upper Rio Tapajós basin the Mato Grosso state in Brazil. It is the only species of Moenkhausia with such a colour pattern. So already in the original scientific description (1979) the author mentioned that this generic placement can be only provisionally. This makeshift stands until […]

  • Acestrorhynchus cf. minimus

    15. October 2021

    Unfortunately, almost all predatory fishes have one unpleasant characteristic: most of them grow too large for average aquarium dimensions. In many cases we can only keep juveniles for some time and have to part with them when it becomes nice. What a pity! An exception to this rule is Acestrorhynchus minimus, a barracuda tetra from […]

  • Apareiodon affinis

    13. October 2021

    Now begins the season for one of the best algae eaters of all, the La Plata algae eater from Paraguay. Originally the species was described as Parodon affinis. It is amazingly similar in shape and coloration to the Asian Flying Foxes; but of course, the La Plata algae eater can always be easily recognized by […]

  • Myloplus (formerly: Myleus) “Lamax III”

    30. September 2021

    Silver dollars and Pacus are magnificent fish. However, they grow quite large and most species eat plants, so they are mainly suitable for show aquariums and specialists, less for the classic community tank. Therefore, the demand can usually be met well with wild catches. However, some time ago breeders in Asia have taken up the species Myloplus schomburgkii (formerly the species was placed in the genus Myleus) to be independent from the irregular supplies from South America.

    Myloplus schomburgkii is widespread and common in the middle and lower Amazon, the Rio Nanay, and the upper Orinoco. The species reaches a maximum length of about 45 cm and is used as a food fish. Juveniles show a crescent-shaped banding on a silvery ground, which varies in width depending on origin, so it is reasonable to assume that future studies will show that there are multiple, closely related species. The anal fin is colored red.

    How and when the breeding form “Lamax III” appeared for the first time is not documented, we probably showed the first pictures in the western press, that was in 2012. It seems to be a very rare form, which is difficult to manifest in breeding, because on the world market in 2012 only 30 animals were offered, of which 20 came to Aquarium Glaser. One can probably say without exaggeration that at that time Myloplus “Lamax III” was one of the rarest fish in the world. In the meantime this has been put into perspective and you can get the form from several Asian breeders for more moderate (but still high) prices.

    It is a bit speculative to assign Lamax III to the species Myloplus schomburgkii, but the thesis seems credible, since the breeder from which the fish originally came offered “normal” M. schomburgkii as “Lamax I” and the naturally occurring variant or species with the broad central band from the Alto Solimoes as “Lamax II”. Thus, it is reasonable to think that “Lamax III” is a mutation that occurred during the breeding of the aforementioned two forms. On the other hand, it is most likely not a cross, because all 20 “Lamax III” from the import of 2012 and also the now (2021) imported animals look identical. Moreover, in case of a hybrid there would certainly be more specimens, since such large fish as M. schomburgkii spawn several tens of thousands of eggs at once. The Lamax III are internationally also called “Blackberry”.

    For our customers: the fish have code 270904 on our stocklist. Please note that we only supply wholesale.

    Text & photos: Frank Schäfer

  • Abramites hypselonotus

    27. August 2021

    The marbled headstander is perhaps the most unusual of all headstanders. This beautiful fish grows to about 15-20 cm in length and is hard to mistake because of its high body shape. There is only a second Abramites species, A. eques, but it has never been imported alive. It lives exclusively in the Rio Magdalena […]

  • Mylesinus paucisquamatus

    19. August 2021

    A few weeks ago we introduced you to a new pacu, which we received as Tometes kranponhah. At that time we thought the animals originated from the Rio Xingu. (see https://www.aquariumglaser.de/en/fish-archives/tometes-kranponhah-2/)  In the meantime, further correspondence with our supplier revealed that the animals did indeed come from the Rio Tocantins. We have received another shipment […]

  • Paracheirodon simulans

    5. August 2021

    Paracheirodon simulans is the smallest and tiniest species of neon tetra. The maximum length is around 2.5 cm. One should not confuse this species with the neon costello, Hemigrammus hyanuary, which is also called the “green neon” occasionally. This is the reason why some people call Paracheirodon simulans the “blue neon”, but in the international […]

  • Brycon amazonicus Colombia

    2. August 2021

    The species of the genus Brycon belong to the large tetras of the open water. 21 species east of the Andes were distinguished in the last revision by Flávio C. T. Lima (there are others west of the Andes). Their identification, especially of juveniles, presents considerable difficulties, because they usually grow to 30-40 cm in length and adults look quite different from juveniles. That is why we listed B. amazonicus as Brycon sp. Colombia on our stocklist until now. However, the fine line pattern of the juveniles, which is very unusual for Brycon species, and the distinctive caudal fin pattern now lead us to believe that these animals are the species B. amazonicus, which is widely distributed in the Amazon and Orinoco systems. 

    The care of Brycon is in principle simple, but one must not save on food. They are very greedy and fight for a food tablet like a pack of puppies for a bone. Due to their expected final size (approx. 50 cm!), combined with swimming pleasure they need large aquariums.

    For our customers: the animals have code 212652 on our stocklist. Please note that we only supply wholesale.


    Lima, F. C. T. (2017): A revision of the cis-andean species of the genus Brycon Müller & Troschel (Characiformes: Characidae). Zootaxa 4222 (no. 1): 1-189.

  • Alestopetersius leopoldianus

    30. July 2021

    Our current Congo import contained among others the magnificent tetra Alestopetersius leopoldianus, which originates from Lac Mai Ndombe (formerly: Lake Leopold) and the middle Congo. With this maximum 9 cm long species one can get philosophical about the supposed objectivity of photography. Depending on the incidence of light the animal looks completely different! With the […]

  • Moenkhausia nigromarginata

    23. July 2021

    Again we can announce a first import: Moenkhausia nigromarginata. For the first time ever we received some of these tetras described in 1994. The species reaches a length of about 5 cm. Striking are the blue eye, the blue back in incident light and the – sometimes more and sometimes less visible – zigzag bands […]

  • Hyphessobrycon moniliger

    19. July 2021

    Under the name “Hasemania hansseni” a new tetra has recently appeared on the market, which with its intense orange coloration is indeed somewhat reminiscent of the well-known copper tetra, Hasemania nana. However, one of the characteristics of the genus Hasemania is that it lacks the adipose fin that is so typical for tetras. This is […]

  • Moenkhausia rubra

    16. July 2021

    New legislation in Brazil now allows the import of species whose export was previously not allowed. One of these species is Moenkhausia rubra, which was only scientifically described in 2014. The species is so far known only from the Rio Juína and the Rio Juruena, both belonging to the upper Rio Tapajós drainage, Mato Grosso […]

  • Hyphessobrycon sp. “Muzel Red Cherry“

    7. July 2021

    From Brazil we received this really nice novelty, which looks a bit like an enlarged edition of the Ember tetra, Hyphessobrycon amandae. However has the “Muzel Red Cherry” two (although indistinct) shoulder spots, which never occurs in H. amandae.  In addition, the dorsal fin in “Muzel Red Cherry” is red with a light margin, while […]

  • Hyphessobrycon eques “Longfin”

    28. June 2021

    The Serpa Tetra, also called the Callistus Tetra (Hyphessobrycon eques, formerly known as H. callistus or H. serpae), is the little man’s piranha. Just like piranhas, serpa tetras have an irresistible urge to bite the fins of other fish. And they constantly want to test out who is the stronger. This makes many exciting observations […]