I may be buying a male betta to go along with my 3 Emerald Cory's. When I go to various pet shops, they look terrible in their little containers. I will try to pick one up from a local breeder, but if I did go the pet shop route, besides torn or clamped fins, how do I pick a good one? I may just wind up not getting the beta, and rearrange my three tanks with the multi's in the 10, most of the others in the 20H, and the pleco and neons (until tubbin' time) in the 29 with some docile mbuna. Plans for the 75 set up are on hold for a while.