My water parameters are stable 0 ammonia, 0 Nitrite and 20ppm. I am running 2 AC 110's and two hydor wavemakers at opposite ends of the tank. The fish that I am keeping are Aulonacara jacobfreibergi tsano rock Peacocks. I usually feed my fish New Life Spectrum Cichlid Formula. Over the past few days, the fish have not seemed interested in eating. Does anyone have any ideas as to why the fish are behaving this way?