10-16-2011, 05:46 PM
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I don't think there is any "flashing" as such, this to me is a swim bladder issue. I had a rummy nose tetra, one of my group of 18 which I've had for over a year, come down with this yesterday quite suddenly. They never recover in my experience. Sometimes I leave them, sometimes I can't bear to see it myself and destroy the fish. As far as I know there is no cure. I once had a fish that took to sitting on a plant leaf all day because it couldn't swim; it lived for several weeks, but it wasted away as it was unable to properly feed. I assume it is genetic and not something contagious, but I will readily correct this thinking if someone knows.