Sternarchogiton is a genus of weakly electric ghost knifefish (family Apteronotidae) from Amazon and Orinoco basin rivers of South America - the atlas records Brazil, Peru, and Venezuela. As in other apteronotids, the fish lack a dorsal fin and swim using a long, undulating anal fin, and they generate a weak electric field through a specialized electric organ used for orientation and communication in the dark or turbid water they typically inhabit. Atlas species run 7–15.5 in, a mid-sized build within the knifefish group.
Sternarchogiton is a genus known mainly to ichthyologists and electric-fish researchers rather than the aquarium trade - none of the four atlas species carries an established common name, a fair marker of how little exposure the genus has had outside specialist study. Some accounts in the wider knifefish literature describe males of certain species developing unusual tooth-like skin projections on the snout, though that trait is not confirmed here for every species, and natural-history data for this deep-channel genus stay generally sparse. Conservation is mostly reassuring - three Least Concern species - with one Vulnerable listing as the exception.