Potamotrygon Motoro - "Three Spot" or "Triple Spot'
This is just a species variant to the P1 Motoro, and sometimes demands a higher price due to it's pattern.
It is distinguished by having an extra spot, within the parameter of the traditional p1 ocellate.
This spot can vary in size and color (black, white, tan), and is fairly common morph.
Notice the spots on the eyes, too.
Photo Credits: Miles Bergsma
Photo credits: Wei Kang