Discus Fish Disease: How to Deal with Them As a hobbyist who is currently taking care of discus fish, you have to remember that aside from knowing how to raise them, you also need to know about the diseases that may afflict them. By learning about the different kinds of diseases that may affect your discus fish, you will be able to tell if your discus fish already has the disease and also know how to treat them. Another well known secret in raising discus fish is providing them with a good diet. A good diet must be a varied diet, which can include some blood worms, beef heart, tetra pieces, and some frozen or fresh brine shrimp. Remember not to over feed them and to clean any leftover food. If left inside the tank, the food can turn the water and sicken the discus fish. However, you need to keep in mind that although discus fish are considered to be high maintenance fish, you will find that there are other species that can also thrive with the discus fish. And, the best thing about these fish species is that they go along with discus fish and can really enhance the look of your discus fish aquarium. Although fishes are fragile as compared to other household pets, they don t really just die and wither if they are kept well. And all you really have to do is make sure that the tank is clean and feed them as scheduled, which is not really all the time. There are some factors though that can cause them stress and thus weakening their immune system. In the female discus fish, the dorsal fin will seem to be rounded, while in the male, it will look more pointed. This is not distinguishable when the discus fish are still young, you can only notice this when they are in their adult stage. During spawning, you will notice that the breeding tube of the male discus fish tends to be smaller and sharper, with the female, the breeding tube will be rounder, and broader. This is to prevent them from getting lonely and also prevent them from getting aggressive against their own kind. Discus fish are shy types of fishes. This is why you also need to put some ornaments and plants inside the aquarium. These things will serve as a place to hide for your discus fish. Also, you have to remember that discus fish are quite sensitive to noise.