Hidden Evolutionary Units and Its Implications on Conservation in a Vulnerable Species of a Freshwater Fish.

is a fish genus in the order Characiformes, distributed from southern Mexico to the La Plata River in Argentina. Several of its species, including , are threatened with extinction or considered vulnerable because they are highly sensitive to anthropogenic factors. The decline of these species may be related to the growth of agriculture and mining in the Brazilian Cerrado region, thus their recovery requires management plans.