Cetopsidae – Ichthyology https://www.floridamuseum.ufl.edu/fish/catfish/cetopsidae/
Whale Catfishes The family Cetopsidae consists of 41 known species of small to moderate sized fishes which share an anal fin with a long base, a lack of spines in the pectoral and dorsal fins other than in a few species of the subfamily Cetopsinae, and the lack of a nasal barbel, a free orbital mar
the Orinoco River system and the coastal rivers of the Guianas, south through the Amazon