My Betta has become worse! :(

I’ll do my best to keep this short-

I have been away the previous 3 days. I purchased a new Betta on Monday and he has been in quarantine since, with my Green Neon Tetras. I put live daphnia into the tank before leaving for the fish to hunt down.

I left my Betta with a slight tear in his tail. This seems to have healed. I put an IAL in before leavingbut now a larger rip seems to have occurred while I was away. I use remineralised RO with a cycled sponge filter so parameters are not an issue.

My Betta was housed with Neons at the LFS and got along fine, I also have seen no problems since keeping them all in qt. I am leaning towards this being a case of tail biting, since my qt is so boring.

How should I proceed? Tomorrow is a week since purchase and I see no illnesses in any fish. I could either move everyone in to my 45L community tank which is empty right now, or I could isolate my Betta in qt and treat with API salt.

Picture#1 Betta before I left
Pictures #2&3 Betta as I returned today

 

 

Bump

 

Anyone?

 

If tail biting, you could have a real fight on your hands. Mine doesn't split his tail though, he just takes chunks. Anything else maybe he could catch those big fins on?

 

If tail biting, you could have a real fight on your hands. Mine doesn't split his tail though, he just takes chunks. Anything else maybe he could catch those big fins on?

Thank you for getting back, I’ve been so worried.

I’ve not seen him actually bite, but I have seen him swim erratically very rarely. He was flipping out at my thermometer and I saw part of his tail or fin come off. The only other thing it could have been in the tank was his hammock. I noticed it fell off while I was away. Virtually nothing in the tank now: 2 sponge filters, 1 thermometer and a heater.

I have done a larger than usual water change and dosed aquarium salt. Pretty sure his tail has got a fungal infection now. Hopefully they all pull through

 

How old is your betta?