I noticed this morning that one of my albino cories is missing her tail! She's moving around, albeit awkwardly. There does not appear to be any sign of fin rot or disease and there is no other color at the break line to indicate a wound of any kind-- it's like it was just perfectly removed at the base of her body. It seems like her top fin may be a little shredded but it's hard to tell since she's kind of curled up. She is about 6 months old and has always been small, even for a cory, and is in a 3 gallon tank with 1 other albino cory and a male betta. The male betta is new (about 2 weeks) but I have never seen him bother either of the cories. I'm not sure what to do. I do not have another tank I could put her in and do not have the space to get one. There are plenty of hiding places in the tank but she hasn't really been hiding at all. I'm worried she won't be able to propel herself up to the surface for air. (Although the tank is filtered.) Water tests indicate all levels are fine, including ammonia. The tank itself is about 7 months old. Do cories ever lose their tails or do I have a bully in my tank? Any chance that she can survive and possibly regenerate her tail? Any advice you have would be very appreciated.
I think that if you separate the beta from the cory and treat the water with melafix the cory can survive. if you don't have enough space for another tank, you can probably buy a tank divider at your LFS for about ten dollars. Good Luck!
Thanks, guys. I'm concerned that she's deteriorating. She's not as active and is on her side under some plants. I guess the divider is the best option for now. If it were summer I'd put the betta in a small 1/2 gallon tank I use for cleanings overnight or until I can see if the cory gets better, but it's not heated and I don't have a way to keep the tank warm. I just don't have the room for another 3 gallon tank and I can't bear the thought of sending the betta back to a little cup at the pet store! (Even after he mauled my little Carly!) I've always thought bettas and cories were compatible. I had a tank years ago and they lived together happily for years. This is so distressing! I can't put Melafix in the tank with the betta, correct?