Guy I purchased her from said he had her since jan. Is it me or is she still tiny got her age? About 6" disk if even that.
Yes, does seem small, maybe the ray is stunted in some way and is storing fatty deposits there, after all if they are starving they have a dent there so must be some fat deposit....if not then suspect a cyst.
If it were me I would isolate and reduce the food for a few weeks and see if reduces, if so then fat, if not then lump, grow or cyst?
Some type of backwards HITH is my guess, or it hit something Sharp real hard causing a weird wound but even then.....
Go S. Vettel #1 rb8