They are in my 75 until the tank at school (55 hopefully) is set up. They pipefish will be getting their own home if we do not get the 55, but if we get the 55 the sea cucumber, the pipefish, the killies, the 2 hermits, and the snail are going in together. The blue crab is going to have to live by himself because he would kill anything else. I will post pics when we get a bigger tank.