In general Discus eat small insects found in their habitat
such as larvae, inverts and fry. Consult your local pet
store for information regarding choosing a specific brand
of fish food, however Discus have no special requirements.
In the wild, Discus are found in the slow moving waters
of the Amazon River system. These waters tend to be warm
with little current to toss them around. Keep this in mind
when designing a habitat for them. They will require a good
filtration system just beware that it does not move the
water around too much as that will disturb your Discus.