So, you have to replicate the water quality in Brazil in your fish tank if you are going to keep a Discus Fish or any other fish found in Brazil. You also have to keep in mind that larger volumes of water is easier to keep stable than smaller volumes. This is why you have to consider the size of the tank where you intend on keeping your Discus Fish. This means maintaining the temperature and the pH level of their water. Discus fish tend to get stressed when the water experiences an abrupt change or if its dirty. The Don ts Don t allow your tank water to get dirty and filled with food debris at the bottom. Any debris left can cause bacteria to develop and make your fish ill. 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. Discus fish are among the most popular types of fish to keep in the aquarium. Many hobbyists today already took them as pets as they enjoy watching these colorful fishes swim around the fish tank. However, you need to keep in mind that although these fishes are very beautiful, there is a trade off. You need to remember that taking care of discus fish is not that easy. These will not only make the tank look a lot better but these things will serve as a hiding place for discus fish and it will also help keep them comfortable. Discus fish are easily frightened and if they have nowhere to hide, they will get stressed easily and can possibly hurt themselves from dashing around the tank and hitting the glass. Clear or white feces are hints that your discus fish may have internal parasites and that they are unwell and need attention. Also, you should observe their behavior. If your discus fish go on food strike, it s a clear sign that they are unwell. The color of their scales will also get darker, which is also an indication that the discus fish is sick.