Rays store fat in their tails. So the fatter it is, the more fat storagethey have in reserve. It’s kind of like a camels hump. (fat-not water) But thatdoesn’t mean once its fat, you can stop feeding.. Just is a back up that naturegave them just in case. In the wild, they don’t always get to eat like we feedthem.
So the fatter it is, the better fat base they have and that is an indicationthey are healthy. Since Rays will only store the leftover nutrients and fat intheir tail from what the body doesn’t use when feeding..