Spot-tail

About

Found across a remarkable sweep of African river systems, this large characin, Brycinus imberi, turns up in everything from shallow swampy bays and vegetated floodplain lagoons to broad river channels and sandbanks. In the wild it often masses in enormous numbers near river mouths, waiting out conditions before undertaking spawning migrations upstream after seasonal rains. A behavior that hints at just how active and driven these fish really are. In the aquarium, that energy translates into a fast-moving, restless swimmer that needs genuine horizontal space to feel comfortable. Despite reaching a solid 7 to nearly 10 inches, it remains a peaceful species that does well in groups, and a decent-sized school in a roomy tank is genuinely impressive to watch. Its diet in the wild covers insects, small fish, plant matter, and crustaceans, so it accepts a varied menu in captivity without much fuss. Care is intermediate rather than beginner level, mostly because of the tank footprint it needs and its preference for softer, slightly acidic water. Conditions worth dialing in before adding a group. If you have the space and enjoy active, large-bodied schooling fish, this is an underappreciated species worth tracking down.