Phenacogrammus interruptus or Congo tetra is a species of fish in the African tetra family, found in the central Congo River Basin in Africa. Congo tetra are a popular aquarium species. They easily adapt to captive diets like pellets and frozen foods, though they will still hunt down live foods when offered. They have successfully been bred in captivity and captive bred individuals are commonly available.
The Congo tetra has a typical full-bodied tetra shape with rather large scales. When mature, the iridescent colors of the Congo tetra run through the fish from front to back, starting with blue on top changing to red through the middle, to yellow-gold, and back to blue just above the belly. It is not its fluorescent colors that make this tetra so distinct, but rather its tail fin, which develops into a grayish-violet feathery appendage with white edges.
The Congo Tetras are omnivorous. In the wild these fish are insectivores, feeding primarily on insects, but also eat small worms, crustaceans, plant matter, algae, and other zooplankton. In the aquarium the Congo Tetra will generally eat all kinds of live, fresh, and flake foods. To keep a good balance, give them a high quality flake food every day. Feed brine shrimp (either live or frozen) or bloodworms.