I adopted a CT female on Saturday night that was previously owned by my boyfriends brother (who didn't really know how to properly care for bettas). She is doing great and gets along well with my peppered corys. I just noticed though that one of her ventral fins seems to be torn slightly. I'm almost positive that this must have happened before I got her. I was just wondering what I should do to help her? Will it grow back? Is there anything special I should do for her?