I'm a noob, so please excuse the dumb question. Motoros and Hystrix being illegal in California is one of the only disadvantages of living here! I have a 180 gallon sand bottom aquarium, and I'm curious.
Atlantic Freshwater stingrays maybe. Anyways 180 is most likely to small.
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Unfortunately, even if a new species is identified from S. Amer., it would still be illegal in CA since the state banned the entire Family; Potamotrygonidae.
You need to check with your state fish and game to see if you can acquire rays for educational purposes or special use through a permit and go that route
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