You just need to maintain the water quality and feed them right. Breeding them is another story. This is the difficult part. But, with some proper guidance, you will be able to start breeding Discus Fish which you can keep or you can even sell for profit. We all know for a fact that taking care of Discus Fish can get quite expensive. Because Discus Fish thrives on a more acidic type of water, you have to keep the water PH level between 5.5 and 6.8. Discus fish will not tolerate water with a higher PH level. The hardness of the water should be between 2 and 8 and the conductivity should be around 10ms. This may be a problem if you live in a place where hard water is abundant as you will need to bring down the hardness of the water as well as the PH. This is a great way for you to keep your pet healthy and in good spirits. You will also want to keep other varieties of fish together with the Discus Fish in order to add variety to your aquarium and make it even look more attractive. Since Discus Fish are very sensitive to water quality, make sure that you keep your aquarium clean. An adult discus fish is much more expensive because you re paying for the convenience. You don t have to wait anymore for them to grow up and you already get a head start at breeding the discus fish. So only go to a trusted dealer to ensure that you will indeed end up with a pair. Your third option would be to learn how to determine the sex of a discus fish and going to a pet or fish shop. When you are putting tap water in your aquarium, make sure that the water is treated first before you place the discus fish inside. This is to ensure that the water is free from chemicals, such as chlorine and other heavy metals. Discus fish lives naturally in soft water that is slightly acidic. When it comes to feeding, make sure that you don t over feed them. You need to remember that the longer the disease exists in the discus fish, the most probable it will be that the disease may cause its death. You have to keep in mind that even if the fish heals after the treatment, the wound can leave a permanent scar, which can significantly have an effect on the overall appearance of the fish, especially on discus fish.