So I've had my Jack Dempsey and my Oscar for about a year now. I got them both at the same time, when they were the same size, and they seem to have no problems with each other. Even after the Oscar outgrew the Dempsey, he leaves him alone and they mind their own, the Dempsey usually residing in the plants and décor towards the bottom of the tank and the Oscar liking to sit in the open water and stare down anyone who walks past. Now that they are old enough and big enough to eat live fish though, the Dempsey has been acting very strange. I usually buy about 10 minnows and let the both of them have a hay day. But, recently the Dempsey will hunt only a few fish and then he has a meltdown. He will swim around the tank too fast and hit himself on things and then he will swim up to the filter and lay on his side for at least 10 or 15 minutes before going back into hiding. This really scares me every time it happens and I'm just wondering what is happening???
Please Help.
Please Help.