Hi, I have a betta (halfmoon possibly, not sure :-?) that has nipped fins. He has been in a divided 15 gallon for about 2 months now, he had nipped fins when I bought him from my LFS, but he stopped nipping when I put them in my tank. It seems like he has started again though :-(
He is the more "mellow" out of the two males in the divided tank, the other fish is a Elephant Ear Plakat. I have the tank divided into 3 sections, the middle being empty so there is a "barrier" of sorts between them, with both of the dividers being made of 2 sheets of plastic canvas, so I don't think they can see each other well.
I do have an extra 8 gallon tank if you think he should be in his own tank, but it's a hexagon shape...would this be okay for a betta?
Any advice? Thanks