Hi guys I found a strawberry crab in my tank. He must been a hitchhiker from some rocks I got off another member since those were the only live rocks I got to help restart my tank. All other rocks were dry. He been there 2 months before i spotted him, as I was passing my tank in the middle of the night with all lights off including house lights. I haven?t loose any corals or inverts. Any information on them please.