i recently purchaed a young teacup stingray and at the time of purchase was told strictly that they would do fine with all of my current fish like my small african chiclids, this was not true and the stingray has some little nibbles out of his around the back so i removed the chiclids and have added a stress coat to help him to regrow his fins. he seems to be okay and swimming around but he will not eat i set the food right in front of him but he just turns the other way and leaves. i have tried feeding him frozen bloodworms, krill, brine shrimp, raw cocktail shrimp, and live earthworms, and ghost shrimp. please help i dont know what else to do and dont want to loose him.