I have this Betta I got from Wal-Mart. One of the supposed females, turned out to be male. I have had this Betta for over four months. I put four Cories in with him and he chased one into the ground killing it. So I took him out and put him in a tank by himself. Anyone else have a Betta like this? One that you can't have anything with?
P.S. I also had a lot of plants and hiding spots for the Cories.