Are these 2 separate species?

TwoHedWlf

Potamotrygon
MFK Member
Mar 2, 2017
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It's hard to say just from those two pictures. They do look different, but similar enough that could just be individual variation, lighting, angle. If I had to pick, I'd say top one looks like a gravid female, bottom is a non-gravid female. Both the same species.
 
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