Potamorrhaphis

Potamorrhaphis is a genus of freshwater needlefishes native to South America.

Species
Four recognized species are in this genus:
 * Potamorrhaphis eigenmanni A. Miranda-Ribeiro, 1915
 * Potamorrhaphis guianensis (Jardine, 1843)
 * Potamorrhaphis labiatus Sant'Anna, Delapieve & R. E. dos Reis, 2012
 * Potamorrhaphis petersi Collette, 1974