| Potamotrygon adamastor | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Myliobatiformes |
| Family: | Potamotrygonidae |
| Genus: | Potamotrygon |
| Species: | P. adamastor |
| Binomial name | |
| Potamotrygon adamastor Fontenelle & Carvalho, 2017 | |
Potamotrygon adamastor, the Branco River freshwater stingray, is a type of freshwater tropical ray found exclusively in the state of Roraima, Brazil. [1] [2]
This species can be distinguished from its congeners through several characteristics, such as dark gray dorsal disc; body covered with small yellow-white ocelli with a slender dark contour; small irregular spots on disc margin (sometimes); and robust and wide tail base. [2] The size of this tropical stingray ranges from 45 cm to 62 cm disc width (DW). [1] [2]
It is endemic to a single locality of Uriracuera river, an upper branch of Rio Branco river system, Roraima, Brazil. [1] [2] This demersal species tends to inhabit the turbid wetlands with sandy sediments. [1] The only threat to this species might be water contamination resulted from nearby illegal mining activities, as there are no records about its capture by fisheries. [1]
