I have a synodontis catfish in one of my tanks. He is usually quite happy, with dorsal fin erect while he patrols my substrate looking for food. However, unlike every other fish I have, he goes BONKERS during and shortly after water changes. Most of my fish, especially cichlids, play with the python and in the incoming freshwater stream. The syno, however, nearly kills himself as he swims wildly in all directions. Mind you, this is aged water, treated, at the same temperature as the tank water. What do you think is up with him? Do any of your fish act the same way?