I just recently got my new betta (poogie) and today got 3 panda cories to add into the tank. the tank is 25 gallons with a divider down the middle, the other side holding two larger guppies. On my betta's side I have a few plants and a small piece of decor. when I placed the cories (in a bag) in the water he went straight for it, nipping on the bag. after he stopped I decided to put them inside and he started flaring and following them. after a few minutes he stopped. is he going to attack them? should I move them to the other side?