Phenocogramus Interruptus is an African Tetra, from the Congo basin in Central Africa.  Especially when lit from the front, this beautiful fish shows off all the colors of the spectrum.  The males of the species (shown above) develop long flowing tail fins.  Females are smaller, with less vivid colors and do not grow the extensive tail fins that the males do.   P. interruptus needs a large aquarium with areas of dense vegetation, plenty of free swimming space, and a dark bed.  The water should be slightly acid and not too hard-- which is typical of most planted tanks. This is a well behaved fish that rarely if ever bothers its tank mates.   Furthermore, these fish do not disturb plants.  They are an excellent inhabitants for heavily planted aquariums.  Bloodworms, brine shrimp as well as dried food are gobbled up eagerly.