Pseudostegophilus is a genus of catfishes (order Siluriformes) of the family Trichomycteridae. It includes two species, P. haemomyzon and P. nemurus. P. haemomyzon originates from the Orinoco River basin in Venezuela while P. nemurus is found in the Amazon River basin in Brazil and Peru. P. haemomyzon grows to about 5.7 centimetres SL. P. nemurus grows to about 15.0 cm TL. P. nemurus is said to become attached to the gills, anal region, and fins of dead, dying, or disabled fishes.
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