Just got a new stingray ( only 4 or 5 inches) and just wondering what is the best to feed him! we have cut up shrimp and fish but sometimes he goes and eats it and other times he just swims over it and leaves it for another fish to eat. Also at my lps they only have giant super worms and silk worms or frozen cubes of blood worms which when defrosted its just a watery mess and goes everywhere. so not to sure what to feed him and help would be much appreciated! thanks.