I have a red crown-tail that I have named "Furred" (after a cat of mine that had an attitude) and he was in a divided 2 gallon tank. He managed to jump the divider and go after the fish on the other side. I know, I should not have even taken the chance but I did manage to get them separated without any injury. Furred had cornered my boyfriend's beta in its plants (also a male). Once I got Furred out of the tank I put him in his own 1 gallon with a plant. He's happy and all that, has even made a bubble nest once, but after that now every time I even look up at him he flares. The tank is on top of a bookshelf over my desk and we make eye contact and out come the gill plates. He literally flares at anything that moves.
I have read on some pages that flaring like this is stressful for them and I am wondering what I can do to calm him down. When it comes to feeding he even jumps out of the water when going after the pellets some times. He's my second betta and my boyfriend has owned several and has even worked in a store and even has to say that Furred is by far the most aggressive betta he's seen.
Does anyone know of any ways to calm my fish down before it has a betta heart attack?