a couple of weeks ago started loosing some fish checked all water perams and all fine. then one day by chance noticed something moving inside a rock. tryed to catch it with traps to no avail so dipped rock in cold salt water bucket and it shot out like a bullet lol. turned out to be a mantis shrimp just wondering is there any chance that he killed the fish 1 clown fish 1 emperor angel and a bicolor blennie? fish where intact apart from blennie but think my trigger mite have had a chunk when he was dead?