Ageneiosus magoi Castillo & Brull G. 1989

Sexual dimorphism; males form an elongated irregular bent first dorsal spine. They use barbels otherwise hidden in a fold of the upperlip to get a hold on the female while they insert their pseudopenis formed by the anal fin. Type of spawning (ovipar or vivipar) is unknown.

Ageneiosus magoi is a species of driftwood catfish of the family Auchenipteridae. It can be found on the Orinoco Basin.