Neofundulus

Neofundulus is a genus of fish in the family Rivulidae. These annual killifish are endemic to the Paraguay, Guaporé, Mamoré and São Francisco basins in Argentina, Bolivia, Brazil and Paraguay. They inhabit temporary waters, such as swamps or ponds, that typically are located in open habitats like grassland. Once the water disappears, the adults die, but the eggs that have been laid in the bottom remain, only hatching after several months when the water returns.
They are small fish, with the largest species up to in total length.

Species

There are currently 7 recognized species in this genus:Neofundulus acutirostratus W. J. E. M. Costa, 1992Neofundulus aureomaculatus W. J. E. M. Costa, 2015Neofundulus guaporensis W. J. E. M. Costa, 1988Neofundulus paraguayensis Neofundulus parvipinnis W. J. E. M. Costa, 1988Neofundulus rubrofasciatus W. J. E. M. Costa, 2015Neofundulus splendidus D. T. B. Nielsen & Brousseau, 2013
;SynonymsNeofundulus ornatipinnis G. S. Myers, 1935, synonym of ''Neofundulus paraguayensis''