Scleromystax salmacis is a species of catfish of the family Callichthyidae. S. salmacis has the southernmost distribution of its genus. It is known from the Mampituba River and Araranguá River basins in southern Santa Catarina State of Brazil, and the Ratones River, a small coastal river drainage in Florianópolis. References Callichthyidae Catfish of South America Fish of Brazil Fish described in 2005 Taxa named by Marcelo Ribeiro de Britto Taxa named by Roberto Esser dos Reis