Hi, i just got some new bettas for my kids today. I did everything I was suppose to do as far as setting them up. I put 2 of the betta's in a divided tank. One of them , "Prince", is acting strange. He has been laying on the bottom, kinda tilted, then will rush to the top for air, come back down and do the same thing....at times, he will act normal and then seconds later....back to acting strange. He also has been keeping his mouth wide open and seems to be breathing faster than the other fish. What's wrong?