I'm in complete agreement with the other posts. I have (2) males in a 46 gallon tank and they've both claimed opposite sides of the tank. The more aggressive one has the right side and the more submissive has the left. They do often come into each other's territory and most of the time they are without incident, but ocassionally they do get into a little bit of a fight where they're nip and chase each other. I'd definitely recommend only (1) in a 10 gallon.
75G- (3) Firemouth Cichlids, (10) Tiger Barbs, (3) Dojo Loaches, (3) Yoyo Loaches, and (1) Sailfin Pleco.
46G- (3) Pearl Gouramis, (5) Black Skirt Tetras, (7) Harlequin Rasboras, (3) Dojo Loaches, (1) Clown Pleco