Apionichthys rosai is a species of sole in the family Achiridae. It was described by Robson Tamar da Costa Ramos in 2003. It is found in the Amazon River. It reaches a maximum standard length of 3.5cm (01.4inches).
The species epithet "rosai" was given in honour of Ricardo de Sousa Rosa, a marine scientist at the Federal University of Paraíba in Brazil.