Originally Posted by JKfish
Crownie: even though your water params are perfect, think of your fish. If you were locked in a small classroom with 3 hyperactive toddlers, you'd probably snap at them to get away after a while, and maybe get stressed. Same thing with your betta. He probably doesn't have enough space to get away from the activity of the tetras, and they from him.
I understand completely what you are saying, but I really haven't had any problems. He isn't stressed, the tetras stay in their area and my betta his. He swims constantly and gets excited when I come over. He really seems fine and has for the past 6 months. If I thought he wasn't happy or was constantly stressed, I'd give the tetras the boot because I love my betta. I think he just has a very calm personality when it comes to other fish. Thank you for your concern though :)