Thanks Davo! I really need to get him on black sand so his colors come out more, but Im hesitant because it looks like I getting a black ray soon.
Nick, yeah, sometimes they do eat minnows. Not the best thing for them but usually it wont hurt. An old female of mine (its actually Brad's now) ate three 8" bala shraks and mauled a 7" silver dollar. So yeah, its pretty normal. And if it worked that long just to kill and eat it thats a good sign of a healthy ray.