I am interested in this also, I have a albino buenos aires tetra that is doing the same thing, swimming quickly across the tank while having these twitchy convulsions that are strong enough to make him turn. Then he'll run into something (usually the java moss) and stay there with his head stuck in th moss. He's pretty much stopped eating also. Nothing external that I can see. I'm thinking he might have a parasite or tumor that is pressing up against a nerve, or in his brain that is making him act crazy. He's been this way for a couple of days and I have no idea what to do. Everyone else in the tank is happy and has no symptoms. My 55 gal
tank is almost two years old, and I do weekly water changes, and my water parameters are not off. If anyone has some advice for YourPalCM and I, I could use some thoughts. I'll let you know if I see any changes.