I had some nervousness putting these two together in my 12 Gallon nano.I have three fish in this little Tank a Domino Damsel and the Dottyback and Fireclown fish and his Bubble tip Anemone.Fireclowns have a rep in my circles as being aggressive and even my local LFS owner kept the two he had all by themseves.I was concerned about space and the nature of the Dottyback and the Clown.But suprisingly they seem to ignore each other the Clown does not seem to like the Damsel.This gamble seems to have paid off and the clown seems Happy with his Anemone.The nano has plenty of live rock in it the water parameters are fine all seems okay.Still there is a little uneasiness on my part but the fish seem fine. 
