I have a twin tail Halfmoon in a split 10 gallon tank.
The PH is 7.
The temperature is 80 degrees.
The tank has a whisper filter on his side.
This morning he was fine and ate happily, but when I went check the tanks, I noticed that he was biting his own tail. At one point he got turn over by the filter and continued to bite his fins upside down! He is obsessively turning in a circle--right side up, then upside down.
I put him in a 1 gallon heated tank, with his favorite moss ball, a few silk leaves and some crush oak leaves--in hopes that the tannins will encourage fin regrowth. I plan on keeping him warm and dark until this goes away, but what else should I do????
He built a huge bubble nest last night the halfmoon in the other side of the divider is very healthy.