OK, so I bought a beautiful crown tail betta several months ago. Of course all my life I've known bettas as bowl fish. So yes, in a bowl he went but I did switch bowls weekly to give the guy some change (he seemed to appreciate this). Anyways, once I got my tank and found out that bettas usually do well in community tanks, I tried it out. First my male balloon belly molly (whom got taken back to the store for be so terribly aggressive) was chasing and taunting my poor betta. So I slapped the balloon molly into the breeder box and kept watch the betta. Well after the betta had a chance to settle down, he started going after the other fish.... So I took the balloon molly out of the breeder and place the betta in the breeder. The balloon molly went back to the store that day as I was worried he was really going to hurt one of my other fish. Well I gave the betta two days in the breeder so that he could watch the other fish and hopefully accept them. Nope, didn't work. I do have my 10 gallon tank that he can go in as soon as we get the pleco healthy again but problem is, that tank is suppose to be my QT. I really would love to put him (the betta) into my display tank but I don't want him hurting my other fish. I don't have room for additional tanks so I'm going to have to figure out how to make this work (whether in the 55 gallon or the 10 gallon). Do any of you have suggestions on how to get my betta to leave the other fish alone? The tank has plants (3 cabombas (sp?) & 2 Anacharis) and 2 caves to hide in. My fish are : 2 red tailed dalmatian mollies, 3 dwarf sunset coral platies, 1 balloon belly molly, and one oto cat fish.