Betta Attack!

[9amcotes]

Hi we have 1 betta with 5 mollys, 2 angels and 1 cat fish. They have been happy for about 1 month and now the betta has starting flaring up against the black molly we have. Any ideas why he has starting doing this??

 

[Netty]

Bettas are very territorial fish and sometimes they can seem fine and then all hell breaks loose!!!

Are you able to house him separately at all? If not then maybe you could section off part of the tank for him....obviously depending on the size of the tank.