I have 2 Jaguar Cichlids about 7 inches each in my 90 gallon tank. Nothing else is in the tank.I've had them for a few weeks now. They are always hiding when the lights are on.I am only using 2 small strip lights from 5 gallon tanks for lighting and some floating plastic plants.Wondering if I can put some dither fish like silver dollars in the tank to make them feel less shy.I realize the dither fish have to be big enough so Jaguars can't eat them.Water parameters are PH 7.2,0 Ammonia,0 Nitrites,15 ppm Nitrates.I change 50 per cent of the tank water 2 times a week.Any advice?