Brachyhypopomus occidentalis (Regan, 1914) . Occidental Bluntnose Knifefish; Pez Cuchillo, Pez Cuchillo Aplanado, Pez Navaja, Pez Machete, Anguila, Anguila Falsa, Madre de Barbudo.

Distribution: Global: Central and South America; from eastern Costa Rica to Ecuador and Venezuela, Atlantic and Pacific drainages; Costa Rica: Si (Atlantic), 1– 60 m.a.s.l., Pri, Pot.

Occurrence and conservation status: Nat, LC.

References: Bussing (1987: 99, as Hypopomus occidentalis —synonym; 1998: 134, as H. occidentalis —synonym; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 994; listed, including taxonomic information and distributional data).