Urotrygon venezuelae

Thorson, T. B., Brooks, D. R., & Mayer, M. A. (1983). The evolution of freshwater adaptation in stingrays. Natn. Geogr. Soc. Res. Rep., 15, 663-694.

https://www.researchgate.net/publication/247871430_The_evolution_of_freshwater_adaptation_in_stingrays Elasmobranch fishes (sharks, skates, and rays) include species inhabiting the full spectrum of environmental salinity, and ranging from fully marine species, through those exhibiting all...

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