I have two BNT- one male and I believe from the size of the low section of the body, one female( no expert here). Here's the issue. At night, lights off, they get along just fine. They play and chase and generally act civil. But when the lights come on, LOOK OUT! The one I believe is a female becomes very testy and forces the other to the back of the tank and will dart at him if he comes back out. Turn the lights off and they are best friends. Any ideas other than leaving the lights off?
Thanks.
Thanks.

For as long as it took to get the ones I wanted, I made her put them back after I saw that. She acted like I was crazy but I told her I didn't buy fish from a tank that had a dead one in it. She looked at me like I had two heads!!
Maybe it's time to go somewhere else