Not really, the tig has been stabbed a few times by the rays accidentally running into a stinger, caused some blood and swelling but was not something that would kill him
i have NEVER had that problem... must be talking about little tiny baby's??? Mine has eaten massivore, cichlid gold, anything meaty since i got him. I actually try to feed on the opposite side of the tank from him so he wont eat all the food...lol