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Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Trichomycteridae
Subfamily: Vandelliinae
Genus: Plectrochilus
Miranda-Ribeiro, 1917
Type species
Plectrochilus machadoi
Miranda Ribeiro, 1917

Plectrochilus is a genus of pencil catfishes native to South America.


There are currently three recognized species in this genus:[1]

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.[2]

P. diabolicus grows to 4.8 centimetres (1.9 in) SL.[3] P. machadoi grows to 9.3 cm (3.7 in).[4]

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.[4]


  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Plectrochilus in FishBase. February 2012 version.
  2. ^ Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628.
  3. ^ Froese, Rainer and Pauly, Daniel, eds. (2007). "Plectrochilus diabolicus" in FishBase. July 2007 version.
  4. ^ a b Froese, Rainer and Pauly, Daniel, eds. (2007). "Plectrochilus machadoi" in FishBase. July 2007 version.