Personally I'm not sure I've never kept a ray, I just have heard some stories, this post may be better in the ray section simply because the gatf wouldn't be the one causing the issue more than likely, it'd be the ray. A member who's a little active over in the catfish forum had one eat his tig, despite the pectorals, the size difference in not sure of but he seems to think rays can take in a large meal. I'll tag him once I get his name see what he thinksThe gatf is about 30cm the biggest ray is 35cm.. what you think?