Just as a tropical discus fish is somewhat finicky about their environment, feeding the discus can be somewhat tricky as well. Any high protein fish food can work for your fish, but be forewarned that if you switch food on this species for any reason it may take up to a month for your fish to begin eating again. Rarely will a tropical discus fish starve itself – it will eat when hungry enough but this finicky fasting can stunt the growth of some of your younger fish.
Tropical Discus Fish