As regards technical issues, fish choice is vital for beginners. The most common mistake that people - who are about to get a discus - do is being in a rush and getting fish from different sources. Getting fish from different sources pose a great risk for beginners. Thus, it is better to determine just one source to get all fish. Now, it will be useful to underscore the following points.

I recommend you not to get fish that are under the age of 90 days and 6-7 cm in terms of length. The head-eye ratio is another issue to take into account; do not select the fish having relatively big eyes with respect to its head. It is necessary to prefer a native fish the parents of whom you know. The bars on the discus should be continuous and straight. Before you get them, observe that they take the nutrition with great enthusiasm. The body of the fish you want to get should be like a real disc. There ought not to be any injury or deformation in the body. Do not choose fries that have already a colour. Discus is a kind that likes to live within a flock so that it can cope with environmental problems. According to the conditions, you can create a big flock, but you should decrease the number as the fish grow.