Hyphessobrycon columbianus, the Colombian Tetra, is one of the larger members of its genus and one of the more assertive tetras commonly available in the hobby. Its coloration is attractive and distinctive — a silver to bluish body with vivid red-orange fins, particularly prominent in the caudal and anal fins of mature males. Males tend to be slimmer and more intensely colored, while females are deeper-bodied. Native to the Atlantic slope of Colombia, this species inhabits a range of freshwater environments and is more adaptable to varying water conditions than many Amazonian tetras. The Colombian Tetra is an energetic, fast-moving fish that does best in schools of 8 or more. In smaller groups it can develop fin-nipping tendencies, particularly targeting slow, long-finned species like bettas or fancy guppies. However, in large schools in a spacious aquarium with robust, fast-moving tankmates, this behavior is minimized as the fish focus their energy on schooling. Despite its semi-aggressive tendencies, the Colombian Tetra is a straightforward species to keep, tolerating a wider pH and hardness range than more delicate Amazonian tetras. It is a lively and visually striking addition to a robust community aquarium.
