If you get 2 juvinelles they will (with luck) accept each other and become a pair. Maroons are IMO the most beautiful clownfish and have very firey personalities, they are very agressive towards others so if you do go with them you can't keep any other fish in a tank that size. If you have proper lighting you could keep a bta (maroon's natural host) in a 29 with them, and you would not be sorry, that would be a sweet set up. : )