Sometime last night one of my cresties lost her tail. I have my two females housed together in a 29gal tank. They are both really small, but one is a little bigger than the other. Have they been fighting? They've been living together for the past 5 months and I'm a little freaked to find her without her tail this morning. I feel bad, I don't even know what happened.

I also have to search the tank for her tail now.