hey everyone i need your opinion and help. i have 6 bala sharks all 4" and 5" 2 off them are acting weird. they will chace each other everyonce in a while. then they dance around each other and do twists and turns and stuff. they have never done this before and its just these to. i have no idea, matbe there breeding? are they even big enough to breed? bc if they are i want to do the right thing to have a nice big bach of babys. thanks