long whiskered catfish family sorubim catfish A genus of several South American catfish species of family Pimelodidae. The species are known by a number of different common names. They typically inhabit major rivers where they prefer the main channels and tend to stay at maximum depth, but some species can also be seen in lakes, flooded forests, and other freshwater habitats. They have robust bodies, and are important food fish. Pseudoplatystoma Pseudoplatystoma Bleeker, 1862 requires discussion