Tetra

About

Tetra (Hyphessobrycon acaciae) is a small, slender characin from the upper Orinoco River basin in Colombia, where it likely inhabits the kind of soft, slow-moving or blackwater streams typical of that region. Adults top out at just over an inch, putting this species firmly in the nano category. The most immediately noticeable feature is a dark lateral band running along the body. A trait it shares with a handful of close relatives in the Orinoco, though subtle differences in scale counts, fin-ray numbers, and dentition set it apart from those look-alikes. In terms of aquarium suitability, its small adult size and beginner care rating suggest it's a forgiving fish that doesn't demand specialized conditions or a large footprint. Like most small Hyphessobrycon species, it would almost certainly do best in a group rather than kept alone, as schooling provides security and brings out more natural behavior. That H. acaciae is not yet a commonly traded species in the hobby, so detailed behavioral observations from hobbyists are still limited. If you manage to track some down, a well-planted setup with subdued lighting would likely suit them well and show off that lateral stripe to its best advantage.