My tank is a 240 gallon deep bowfront. I have a pair of small ocellaris clownfish who just hang out at the top of the tank. My friend may have to take his tank down while his house is tented for termites, so he asked if I could take his two fish (small tank). One is a Cardinal, which is no problem, but the other is an adult Maroon Clown. That's a bad idea, right? My only thought is MAYBE it would be OK since the maroon would be a new addition? I previously had a pair of maroons in a different tank but they were the oldest fish in there and very well-established. Maybe that makes a difference? I don't know...