No need to worry about snail shells, rays have pretty powerful teeth as you'll learn someday if you decide to handfeed yours. My male motoro has learnt that my fingers = food, regardless of if there is anything at all in my hand he comes up and bite me when I leave my hand unattended in the bottom of his tank. Anyway, powerful teeth, to crush invertebrates shells like shrimps or snails, it's fine, if anything you'll probbly find yourself lacking in snails after a while.



