I woke up this morning and noticed that my escondido had some nipped on fins. The only fish that I have in my tank is a 5inch jag, 5inch midas, 5inch escondido and a 4inch argentea. The only one that I have seen chasing the escondido when the lights are on is the midas. Is there anyway to get this to stop or am I going to have to move him to a different tank.