I got 2 new baby bluegill for my pond and rn I have them in a 20gal as a temporary tank till they go in my pond and the little one keeps pushing up on the big one none of my other bluegill did this when they where in the tank can someone tell me what is happening and is it ok for them to do this because they have been together non stop hagging out with each other till today when they did this can someone please help.