This morning I decided to go to Ace hardware store to pick up some ammonia, and lo and behold, there was a Petco right across the parking lot. I stopped inside just to get some more cat food, but I had to stop and look at the Bettas. There I found a female Koi Betta (who I think is a boy since I haven't been able to see his/her eggspot) who was missing his/her tail... I tried walking away from him/her, but I couldn't leave without him/her. S/he also seems to have ammonia burns, but s/he still seems to be fairly active. Tl;dr: I got a Betta who's missing her/his tail because I'm impulsive and don't know how to say "no." S/he is currently in a small one-gallon tank until I can get my 9-gallon cycled. I added some Prime to the tank and will be performing water-changes every day until s/he can move to a larger tank. What else can I do? Thanks!