I had quiet the adventure on Saturday morning about 5:30. while I was sleeping something woke me up like the smell of rotting fish. so i wandered around and finally noticed that all the fish were at the top of the tank in my 125. so i turned on the lights and noticed that there was chunks of half eaten food floating around. and the culprit my 14 inch RTCXTSN!!! I know the ammonia was high as my 2 10 inch tinfoil barbs flipped upside down and were gasping for air. so after a 90% water change the ammonia is down to 1 ppm!!!!!!!! did a water change later that day and got it down to .25 PPM.