Ratchet has taken up tail biting in the last day. He only slightly mangled his tail earlier today, but when I went to check on him just a few minutes ago, it was definitely worse and there was a slight tear in the middle of his anal fin.
Is there any way to prevent this habit or am I going to be stuck doing treatments with him?
I've tried to reduce his stress as much as possible by keeping the lights off and adding a dosage of aquarium salt to help him heal up. I'm thinking about moving Yorick to the third section of the tank and switching Frog back to the middle if she doesn't get too stressed either.
Is Ratchet maybe a fish that needs a single tank or is it maybe just stress from too much light last night?
He's never had this problem before. There's no visible fin rot that I can see either. Would scrubbing out his tank completely to have a fresh start maybe discourage this?