Bad first post I know ..... had my cowfish for several months wasn't aware ofbhis poison until after the purchase... he was happy and the life of the tank... we hand fed him and he was very social.... yesterday we purchased a porcupine puffed and a rock beauty.... they were all fine when we went to bed ...... woke up today to everything dead minus a clown fish and a blenny ... who both were on they're way out until removed.... all in all I'm out a few hundred bucks.... no more cow fish for this guy....