 This species can be readily distinguished from most other "Glyptothorax" species of the region by its slender body.The only possible confusion is with "Glyptothorax platypogonides" (as which this species was originally misidentified) and "Glyptothorax siamensis" but "G. exodon" can be identified by its relatively large eye, uniformly mottled colour without distinct pale stripes and a large area of premaxillary teeth visible when the mouth is closed.This species of catfish possesses suction cups under its belly to allow itself to stick to smooth surfaces on the river bed, thus, allowing it to resist the fierce currents of the Kapuas River system.