I had 2 blue throat triggers in my tank and everything was fine for months. About a week ago both hid and refused to come out. Last night when I went down the smaller one had died and seemed to be a little beatin up. Now today the other one is out and about like nothing happened. All other fish during this were perfectly fine like nothing happened. Is it possible the smaller one was also a male not showing colors and the 2 fought and the bigger one won? Very upset today