Alright guys I am upset, mad, mind boggled. All my fish in all of my tanks are flashing on a pretty frequent basis. All of my tanks are over filtered and under stocked in my opinion. I keep a strict water changing regiment and I have cut back on feedings recently. All the fish appear to be visibly healthy no signs of stress great coloration. I have water testing kits and I have never seen my Nitrates above 30 ppm and this reading would be right before a water change. My tigrinus does it the most frequent and the most violent performing barrel rolls as he rubs himself. I also have a cobra pike who I have raised from about 3" to his current size 10". He has flashed on a pretty consistent basis since I have gotten him. I haven't had an outbreak of ich in over a year and this has only occured in very young fish. All the fish that are currently doing the flashing are bigger mature fish. What else could be causing this? All the fish are eating like gluttons and don't show any signs of stress beyond the flashing. I have a trip to the local fish store planned today where I will pick up another testing kit just in case my current one is faulty. All other parameters seem to be fine. Obviously there is no amonia or nitrite in the water but the ph is right around 7, hardness and all other parameters are all within acceptable ranges. I am stumped. I would think if there were some parasites or other nasty it would have killed the fish by now. Can anyone out there lend another suggestion. Thanks guys I really appreciate it.
Chris
Chris
