So I recently decided that I would try Finn out in the 10g community that I have. I put Jack in there for a while without any mishap at all... until he figured out that the bottom feeder pellets for the corys was good and became aggressive about chasing them off. So I switched Jack with the other betta I had at the time, Mo. Mo was downright mean to the others for no good reason, so he was put back in his solitary tank.
Now it's Finn's turn. So far he's as nonchalant about the other tank inhabitants as Jack was to start with. I'm crossing my fingers with the hope that he doesn't decide that their sinking pellets are good too. I think he's loving the extra 5g of space too. He's only been in there since last night and there are already tons of bubbles that he's blown floating on the surface. He never did that in his last tank. With any luck he can continue to enjoy his new home... as long as he's polite to everyone else.
One thing is, has anyone here with corys noticed that they occasionally like to rocket up to the surface of the tank and then back down? Well... one of the corys did that just now and catapulted right into Finn. I think they were both surprised, but Finn didn't get aggressive. I laughed so hard.