I cam home and heard thrashing in my 240 and It was my jack Dempsey thrashing around violently and running into stuff. after his fit was don't he was breathing heavily and floating around the tank uncontrollably. then he settled at the top of the water breathing real heavily. Now he is kind of swimming around and the breathing is under control. This is the third time he has done this I believe. I have witnessed it once before and he took some nasty wonder to the head from the freak out and the eventually healed up after a week or two and he looked normal again, That happened a month ago or so. Then I cam home form school earlier this week and noticed he was looking beat up again. Had some scrapes all over his head and his tail fins were looking rough. Now i just cam home and witnessed another fit and now his head had some bad scars on it . He goes back to normal in a hour or so after the fit. He is in a 240 gallon with about 13 other small cichlids, any Ideas to whats going on? I can test the waters because I ran out of test strips. I did just order new ones though and they should be in buy the end of the week. I have a 300 watt heater on the tank but it is brand new and has never been turned on or plugged in because the tank has stayed around 75-78 degrees by itself. Oh also all the other cichilds look fine and have never done this. Also he has been eating fine and has his full appetite.