So have tank with two clowns that been in the tank for two months all by themselves. So finally added new tank mates. One fire gobi and other was a pajama cardinal. Well since the clowns been alone so long they became territorial and attacked pajama and killed him. So did reading and gonna get more pajama, but gonna buy 3 this time. Any suggestions what other fish to add to maybe keep the clowns from being aggressive? And was wondering if I could add a sebae anemone in the tank maybe that would keep clowns away from the pajamas. The tank is a 40 gallon, set up with under gravel filter and crush coral base and have white Florida rock. So any pointers or suggestions would be greatly app. New to salt and trying to learn and understand what and what you can and cannot do.