sub-family of the Pimelodidae, Heptapteridaeinae,
which is now been given full family status.
There are up to 200 species in this South and
Central American family comprising mostly of
the genera Imparfinis, Pimelodella,
Brachyrhamdia and Rhamdia. Most
are predators which vary in size but can be
kept in an aquarium with tank mates that are