Aimara don't handle moves well. They tend tio stay upset about moves for a while. Will go weeks without food if moved around alot. Dorado don't explode into freak out sesions like the wolves will. The dorado was likely a fraction the cost of the Aimara, no reason to act like it's the other way around.... Move the Aimara and the Dorado sees that, will get a big head and will know that another knockout blow gets him the tank to himself. Move the Dorado if it was the one that screwed up, the Aimara isn't going to see the trip to the qt/hospital tank as beneficial. IF the Dorado is the problem get him used to being moved to solitary after every incident. IF it learns great, if not replace with a Brassie. 
