We have received some magnificent tetras from Colombia that, in neutral mood and as young fish, bear a strong resemblance to the Neon Costello, Hemigrammus hyanuary. However, they can be reliably distinguished from that species by their red iris; in H. hyanuary, the iris (that is, the rim of the eye surrounding the pupil) is always brass-colored, never red. Once acclimated and adult, specimens of Hemigrammus sp. aff. hyanuary resemble Black Neons (Hyphessobrycon herbertaxelrodi) or Meta tetras (Hyphessobrycon metae).
Maximum size: ca. 4 cm; Temperature: 22–28°C; pH and hardness: not critical for care (tap water), soft and acidic for breeding; Diet: omnivorous; Social behavior: peaceful schooling fish.
For more information, visit our website: www.aquariumglaser.de
For our customers: these fish are listed under code 256513 on our stock list. Please note that we supply exclusively to wholesalers.
Text & photos: Frank Schäfer
