While selecting the tank in which you are going to grow your discus, do not have any limits. There is no specific rule, but this fish grows up incredibly in big space.I could not find a rival to sump system in filtration. All my aquariums work with sump basis. As regards external filtration, your personal preferences and limits will affect your choice. Outer filter or sump.With regard to heaters, choose reliable heaters with good quality.It is risky to create an environment with lots of sand and plants in these tanks. Once your fish get mature enough, you may consider tanks with decorations and plants.As feeding in these tanks is done with hearth and frequently, one must take into consideration the amount of accumulated nitrate.Water change should not be neglected and, it must be done with specific quantities determined in accorance with the system.Let me inform you with schemes about the filtration system I use. I did not use scale in drawings, the drawings do not include biological tools to make the system easily understood.

If one takes necessary precautions before fish get sick, it is very unlikely to face problems. It is essential to apply a healthy and appropriate diet on fish. Moreover, the water quality in the aquarium should be at a high and stable level. One should avoid behaviors that would make fish stressed as these would lead to weaken their immune system. Indeed, sudden water level changes and poor-quality water would trigger the pests in their bodies, and owing to pests’ effects on weakening fish’s immune system, the fish would be susceptible to sicknesses. Aquarium temperature, pH, GH, KH, NH3, NH4, NO2 are of great importance with regard to this issue. These ratios should be kept stable. Discus is a different kind of fish that demonstrates its discomfort clearly and immediately among other aquarium fish and it is the quickest to respond to the treatments. Thus, one has to be a good observer in the determination of sicknesses and analyzing treatments. It is vital not to be impatient and essential to diagnose correctly. Also, it is necessary not to be careless and one has to be quick to start treatment. Personally, I do not start the treatment before observing the fish for four days, and during this period I try to get water conditions to the most suitable level which is also in high quality. Most of the time, good water conditions are enough for the treatment. I, also, would like to underscore quarantine aquarium as a strong part for the treatment.

Discus'un bilimsel açıklaması ilk olarak 1840 yılında dr.Johan Jacob HECKEL tarafından yapılmıştır. İlerki senelerde birçok bilim adamı amazon balığı Discus için özel tanımlamalar denemişlerdir. Fakat her yayından sonra değişik fikirler ortaya çıkmıştır. Aşağıdaki tabloda 2 sınıf altında 4 alt vahşi neslin durumu gözlenmektedir.

The determination of discus gender will engage our attention very much.

We will wonder which our fish is male and female when they reach in maturity.

Below I stated some criterias that will reduce the chance of mistake on “determination of discus gender”.

Some properties of discus give us clues.