From Thailand we have received pretty snails under the name Neritina coromandeliana. Whether such names are correct, we usually cannot decide, as we have only ichthyologists (= biologists specialized in fish) in our team. Many German snail experts believe that these animals, which are characterized by their zigzag pattern and yellow triangles on a dark brown background, are a colour form of N. turrita, the zebra racing snail, others call them Neritina variegata. Our Thai friend Kamphol U., a studied biologist, who is in constant exchange with the zoologists of the university in Bangkok, however, believes that our snails belong to the species Neritodryas cornea, and we trust in Kamphol.
This question is not that important, what is important is how to care for the snails. And there is the good news: the care of the various „racing snails“ does not differ much from each other. They are euryhaline animals that live in the mangrove along the coast and are exposed to pure seawater at high tide and pure freshwater at high and low tide. Many animals can also be found far inland in pure fresh water. However, the tidal influence is always noticeable, because the larvae of these snails can only develop in the sea.
The water in the aquarium should be not too soft, the pH should be around 7 (rather a little above than below), otherwise you cannot do much wrong. The snails are eager algae eaters, but can eat neither blue nor filamentous algae, only the algae films of green and brown algae that grow on the glasses and decoration. They also accept fish food (flakes, tablets). In the beginning these snails tend to “emigrate”, which is still an adaptation to ebb and flow in nature, therefore the aquarium must be covered very well and absolutely gapless.
For our customers: the animals have code 485481 on our stocklist. Please note that we only supply the wholesale trade.
The Neritina snails are enjoying growing popularity among aquarists. There are several reasons for this. The most important one is certainly that they look attractive. In addition, Neritina snails do not reproduce in freshwater aquariums, as the larvae only develop in the sea. The third important reason for the popularity is that Neritina snails also grate very hard, solid algae, which other freshwater snails or algae-eating fish usually avoid.
The biggest disadvantage of many Neritina snails is that they often crawl out of the water (because they live in nature in the tidal area of the sea, similar to our Common periwinkle all over the North Sea and Atlantic). The aquarium must therefore be well covered.
Neritina juttingae from Borneo does not have this disadvantage; she rarely leaves the water. The unmistakable species has numerous horns on its shell; it grows to 1.5-2 cm in size. In the aquarium, it has proved to feed this snail species dead leaves (beech, oak, walnut, cherry, cattappa tree), as it particularly likes this as food.
For our customers: the animals have code 485552 on our stocklist. Please note that we only supply wholesalers.
Currently we can offer several species of the livebearing snails of the genus Brotia from Thailand. These snails are no hermaphrodites like many other snails, but the sexes cannot be told apart from external features. However, Brotia will never become a plague like many other snails do. They feed on algae and other Aufwuchs. Water plants are not part of their diet. In the wild these snails usually live in streams with some current. The water is medium hard, the pH between 7.5 and 8.5.
Brotia armata is a comparatively new snail in the hobby. It is quite similar to the better known B. pagodula, but both species can be told apart by the shape of the first convolution of the shell. This is grooved in B. armata, almost plain in B. pagodula. The species becomes 3-4 cm long. The small holes on the end of the shell are a species-specific feature and not a disease or damage.
For our customers: the animals have code 481310 on our stocklist. Please note that we exclusively supply the wholesale trade.
Text & photos: Frank Schäfer