My betta has torn a large piece of his caudal fin. The torn off piece is not torn off all the way though, and the piece still hangs off. He got stuck under the filter, and it also damaged his dorsal fin, because he was so stuck I had to pull him out.
Now he isn't eating his food and is a little paler, and he his hiding in this one place and just laying there.
Is this from stress?
And will the piece grow back?
If it does, how long will it take?
What should I do?
He is just a baby betta about 7 weeks old