Potamotrygon castexi (Castello & Yagolkowski, 1969)
- Common name: Motelo, Otorongo, Jaguar, Estrella, Tigrillo, Hawaiian
- Range: Rio Paraná (northeast Argentina), eastern Bolivia and Peru, western Brazil,central Paraguay, upper to mid Amazon drainages
- Adult size: 60 cm
Species description from Rosa (1985):
"Disc oval; dorsal surface of disc and tail brown, mottled with small yellow spots forming vermiculations or rosettes, and occasional ocelli; teeth with wider than long flat crowns, without prominent cusp except in mature males; middorsal tail spines low relative to basal diameter, in irregular parallel rows; yellow spots on disc usually less than eye in diameter..."
