I just did a water change on the 55 gallon tank with two 9" red bellies in it. some of the plants were dug up by them so I just replanted them and thought nothing of it (I have done this many many times before) well, I undevide the tank and my male swims to the other side and now he is freaking out! swimming up and down the far end, kicking rocks all over the place and ripping everything up. I know they get territorial... but like this? is this normal?