Cathorops melanopus ( Günther, 1864)

Arius melanopus ^ZBK Günther, 1864: 172. Type locality: Rio Motagua , Guatemala. Syntypes: BMNH 1865.4.29.51-53.

Distribution: Montagua River basin.

Countries: Guatemala.

Habitat: Only in freshwater.

Maximum size: 230 mm TL.

Material examined: AMNH 35241 (2 al, 113-140 mm TL), Guatemala, Izabal, rio Motagua, near Finca .