Ramnogaster is a small genus of sprats found only in South America. Two species are placed in this genus:
Ramnogaster is a small genus of sprats found only in South America. Two species are placed in this genus:
Ramnogaster arcuata (Jenyns, 1842) (Jenyns's sprat) Ramnogaster melanostoma (C. H. Eigenmann, 1907) (Uruguay river sprat)