I added a new pistol shrimp yesterday with my peacock mantis shrimp that has no interest in hurting any other animal than my sister shrimp that he likes to chow down on I added a yellow watchman goby and a tiger pistol shrimp and the next day I looked for the Pistol shrimps I could not find him and I lifted up the rocks and looked and I found a piece of his shell and I was wondering if this is just a malt or he got killed