Hey guys i need some help... i got a new stingray he is from the wild, I got him from a pet store, i have him in a 55 gallon tank right now.. its going to be upgraded... the water temp is at 80 and the nitrate lever 0 ph is about 7, he will nibble on some earthworms, tried some frozen shrimp doesnt seem to be eating it.. i had some chiclids in there and they were picking on him so i took them out and put them in another tank, any idea? should i be worried yet? he doesnt have the death curl going for him... but he still doesnt move very much...