I've had this balloon molly in my 10g community fish tank for about two weeks, no problems. I have a betta in there too with other fish and have never had a single problem or incident with other fish It's like the betta doesn't even notice the others.
So far the balloon molly has swam in the same patterns around the tank like a retard for the past 2 weeks. He's swam past my betta like he didn't even exist before. All of a sudden a couple hours ago he decided he wanted to start nipping my betta's fins.
I've tried tapping on the glass, feeding, sticking my finger in to swat the balloon molly away and nothing works. All that works is if I turn the light off, I don't think he can see the betta, so he doesn't nip.
Does this molly need a friend or does he need to be removed?