First of all, when buying a Discus Fish, you have to remember that a healthy Discus Fish should look healthy. Discus Fish that tends to stay on top of the tank or near the surface is a sure sign that they are sick. You should also look out for bloated gills as well as unusual spots. Also, be on the lookout for parasites hanging from the fish. If left inside the tank, the food can turn the water and sicken the discus fish. And with any fish, the water is the most important. This is their habitat; it should be kept clean at all times. With the discus fish, being that they originate from the Amazon River where there is a warm climate, the water inside your tank should simulate the temperature which is round 25-30 degrees Celsius. Also, you have to remember that juvenile discus fish needs proper nutrition in order for them to grow up healthy. Remember these tips and you can be sure that you will be able to successfully breed discus fish. This will not only make your aquarium more beautiful to look at but it will also give you a source of extra income by selling juvenile discus fish. 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. So, you may want to put them in a place in your home where there is less traffic and less noise. Some would disagree saying that there are others more beautiful but that is just a matter of opinion, an opinion that millions of aquarium owners have made by owning a discus fish today. This mesmerizing fish though comes with a hefty price tag. Some sellers have been found to be selling their discus fish in the northern region of 250 dollars. 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.