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Potamotrygon castexi

Potamotrygon castexi
Jaguar Stingray
Otorongo Ray (also known as "Jaguar" Ray, P25, P26, P28 or P35): This popular variant has a covering of light-coloured spots that are quite widely spaced around the edges of the disc, becoming less well-defined and much closer together towards the centre. In some specimens they appear as a single mass in the centre of the fish. 
Tigrinus Ray (also known as "Tigrillo" Ray, P30, P31 or P32, ): This one looks quite similar to the Otorongo variant but the spots towards the centre of the disc are fused together, resulting in a lattice-like pattern. 
Motelo Ray (also know as "Tortoise" Ray or P36): Again similar to the Otorongo fish, but so named because the spots on the disc are arranged in small groups, resulting in a pattern not unlike that seen on the shell of a tortoise. 
Estrella Ray (also known as "Star" Ray, P33 or P34): Here the spots are much less in number, giving an appearance reminiscent of a starry night sky (you might need to squint a bit!). In the centre of the disc the spots may appear in small clusters. 
Carpet Ray or P54: This form has a dense patterning of small spots and broken circles.