Parastegophilus is a genus of pencil catfishes native to South America. Species There are currently two recognized species in this genus: Parastegophilus maculatus (Steindachner, 1879) Parastegophilus paulensis (Miranda-Ribeiro, 1918) P. maculatus originates from the lower Paraná and Uruguay River basins in Argentina while P. paulensis is from the upper Paraná River basin in Brazil. Parastegophilus species grow to about in length. P. maculatus enters the gill chamber of the catfish Luciopimelodus pati and feeds on the gills. References Trichomycteridae Fish of South America Fish of Argentina Fauna of Brazil Freshwater fish genera Catfish genera