yr old, 7 inches, no signs of bloat or parasites. Water parameters are within limits, nitrAtes were high yesterday, 60ish ppm. 50% wc, added AquaSafe to 76 degree water. This morning he appeared distressed, pale but speckled illuminated. 8pm he started erraric behavior, swimming sideways, nose dives in the corner, bumping, jumping, etc. Color darkens to almost black, starts having what appears to be seizure activity. Doing another water change now, but he will seize, turn white, turn black, then swim again as normal (almost). Body bends in half, jaw locked, no motion towards end of seizure except fins. Any advice on saving our Fat Fish would be appreciated!!