My ray has recently started eating.. and a lot! thank goodness lol.. I have been keeping the lights off because of it's stress level. I went to feed it a worm for the third time today and noticed the back of its tail has been bitten off or is missing all the way shy of the barb.. so it looks like a dagger sticking straight out of the back. IDK how its missing.. question is.. if one of the fish bit the tail off are they going to die or show signs they bit it off.. since I heard the ray's poison is in it's tail? the barb has been exposed since I got the ray, AS puts foam on it so it will not puncture the shipping bag. Also if the tail has been bit off will the water be poisonous an harmful to my bare hand? water changes and such..