Plectrochilus is a genus of pencil catfishes native to South America. Species There are currently three recognized species in this genus: Plectrochilus diabolicus (Myers, 1927) Plectrochilus machadoi (Miranda-Ribeiro, 1917) Plectrochilus wieneri (Pellegrin, 1909) P. diabolicus and P. machadoi are found in the Amazon River basin in Brazil and Peru, while P. wieneri is found in the Napo River basin of Ecuador. P. diabolicus grows to 4.8 centimetres (1.9 in) SL. P. machadoi grows to 9.3 cm (3.7 in). Specimens of P. machadoi have been found partially buried in the belly of a specimen of Pseudoplatystoma where it apparently had burrowed through the body wall. References Trichomycteridae Fish of South America Fish of the Amazon basin Fauna of Brazil Fauna of Ecuador Fauna of Peru Catfish genera Freshwater fish genera Taxa named by Alípio de Miranda-Ribeiro