this morning after waking up and going to check on my tanks i noticed that one of my peacock bass 3" or so in length was very lethargic, he would swim and stay in the filters current but his breathing was heavier and when he would leave the current he would bump into things. he has been in the tank for 2 weeks now and was very very shy on eating. the other peacock bass is a pig however. after comming home from work tonight i found him dead on the bottom of the tank. i removed him right away and also noticed right away that his gills are Very green!! what the heck is this? i inspected my other fish and they all look to be clean. i perform 25% water changes once a week and i have huge overkill on filtration and airation. 80 gal tank, Fluval 404 and maxijet 1200 powerhead hooked to a ornament filter inside the tank. 2 30gal rated air pumps.