I have a 12 gallon nano cube with 3 hermit crabs, one fire fish, one turbo snail, and one cleaner shrimp. I have heard that the firefish will be scared to come out if I put a clownfish in. Can I put in a clownfish with the firefish? If so, what will happen? Or do I need to take the firefish back and get 2 clownfish. Thanks so much