She was the dominant Aro in the tank since i've had her. Fins and scales are all intact. Not the same behavior has Delgado's aro, or the others. As to parasites, I have treated with salt, but this isn't changing anything. As well the tank has several plecos in it, as well as the other aros, and none show any ailments. The power head might be an idea, but I have 2 Eheim pro 2 filters and they are both pushing the current almost all the way to the bottom, I have the setup vertical, not horizontal. Parameters are pH 7.1, Ammonia 0ppm, nitrite 0ppm, Nitrate 5ppm, temp is 80°, High oxidation, 1 2026, 1 2028, 3 fluval 404., and I have a H.O.T. Magnum that I use once a week. Diet is Freeze dried krill, beefheart, some bloodworms, the occasional cricket.