So I have a school of 10 embers tetras in with my male Betta fish in a 10 gallon. They are super active and all over the tank. The Betta seems to be doing what he normally does, sleeping at the bottom or top of the tank and swimming the tank slowly. I’ve noticed the ember tetras chase each other a little. I thought they were a very peaceful and non nippy group of tetras? Is this territorial or do they play? I’m hoping they won’t get territorial with my Betta, or will they only do it within themselves?