Found the sticky. Didn't realize it was in the same forum, my bad. Is there any possibilty to have more than one species of clownfish in the same tank. For example, pair of gsm's, pair of ocellaris, and a pair of clarkii's? I know gsm's and clarkii's can be aggressive. I would like to know if it is possible. I have a pair of clarkii's and a pair of ocellaris together on one side of the tank with no problems. The only reason I was asking because I have read to add the most aggressive fish last in a system to give the more passive fish time to establish themselves in the tank first. Or does this not work for clownfish?