Cathorops arenatus (Valenciennes, 1840)

Arius arenatus ^ZBK Valenciennes in Cuvier & Valenciennes, 1840b: 106. Type locality: Surinam. Holotype: RMNH 3099.

Arius fissus ^ZBK Valenciennes in Cuvier & Valenciennes, 1840b: 107. Type locality: Surinam. Holotype: RMNH 3036.

Distribution: Northeastern South America.

Countries: Venezuela, Guyana, Surinam, French Guiana and Brazil.

Habitat: Marine and brackish waters.

Maximum size: 250 mm TL.

Material examined: USNM 233482 (+40 al) (2 es), Venezuela, mouth of rio Orinoco, 10 naut. mi. upstream from sea buoy; USNM 286395 (17 al), Suriname, off Surinam .