I Have A Copperband Butterfly In A Fish Only Tank.....i Have A 55 Gal With 3 Green Chromis, A Maroon Clown, A Blue Hippo Tang, And A Coral Beauty Angel......he Was The Last Fish I Put In My Tank.....the Main Thing You Need To Do Is Keep Your Water Clean.....i Do A 10-12 Gal Water Change Every 10...