Today my LFS where i work brought i 2 6" Gulper cats from Germamy and i can get em at Trade price, but my friend who ive had a lot of fish off of got them. Next month when they ship again were getting either another 2 or 4 ordered in and i wanted t know are they safe with motoro stingrays at 6-7"disc 10", wll they eat them or will the ray spike them, i know that theyll eat most fish. just curious if not ill buy a new tank.