''Melanocharacidium'' is a fish genus in the family Crenuchidae (South American darters). They are found in the Amazon,

Orinoco The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ...

and Araguaia basins, as well as river basins of the

Guianas The Guianas, sometimes called by the Spanish loan-word ''Guayanas'' (''Las Guayanas''), is a region in north-eastern South America which includes the following three territories: * French Guiana, an overseas department and region of France * ...

. They are small fish, up to around in

standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ...

Species

There are currently nine recognized species in this genus: * '' Melanocharacidium auroradiatum'' W. J. E. M. Costa &

Vicente Vicente is an Italian, Spanish, and Portuguese name. Like its French variant, Vincent, it is derived from the Latin name ''Vincentius'' meaning "conquering" (from Latin ''vincere'', "to conquer"). Vicente may refer to: Location *São Vicente, Cap ...

, 1994 * ''

Melanocharacidium blennioides ''Melanocharacidium'' is a fish genus in the family Crenuchidae (South American darters). They are found in the Amazon, Orinoco and Araguaia basins, as well as river basins of the Guianas. They are small fish, up to around in standard lengt ...

'' ( C. H. Eigenmann, 1909) * '' Melanocharacidium compressus'' Buckup, 1993 * '' Melanocharacidium depressum'' Buckup, 1993 * '' Melanocharacidium dispilomma'' Buckup, 1993 * '' Melanocharacidium melanopteron'' Buckup, 1993 * '' Melanocharacidium nigrum'' Buckup, 1993 * ''

Melanocharacidium pectorale ''Melanocharacidium'' is a fish genus in the family Crenuchidae (South American darters). They are found in the Amazon, Orinoco and Araguaia basins, as well as river basins of the Guianas. They are small fish, up to around in standard lengt ...

'' Buckup, 1993 * ''

Melanocharacidium rex ''Melanocharacidium'' is a fish genus in the family Crenuchidae (South American darters). They are found in the Amazon, Orinoco and Araguaia basins, as well as river basins of the Guianas. They are small fish, up to around in standard lengt ...

'' ( J. E. Böhlke, 1958)

References

Characiformes genera Fish of South America Crenuchidae {{Characiformes-stub