Aphyoharax pusillus was described in 1868 by Günther. Aphocharax means small charax, where charax means pointed pole, the species name refers to the small pointed teeth. Pusillus means very small, a reference to the small size of this species.
In 2018, Aphyoharax alburnus has become a junior synonym of Aphyoharax pusillus.
Aphyoharax pusillus can reach a maximum total length of about eight centimeters.
John de Lange