Environmental conditions required for breeding carp fish

Considering that fish is a cold-blooded aquatic animal, its body temperature is almost equal to the temperature of the surrounding water. With the increase in temperature, the fish's need for oxygen also increases, in which case aeration of the pool becomes necessary. The ideal water temperature for common carp is 25 to 30 degrees.

The minimum and maximum acceptable pH is 6.5 to 9. The pH is at its maximum in the afternoon and at its minimum at sunrise. Avoid a sharp increase in pH in the afternoon by sprinkling lime water in the early morning. Too high or low pH causes damage to different tissues of the body, especially the gills. To prevent this event, the pH of the water should be measured regularly.

The salinity of freshwater is less than one gram per liter. Cultivated hydrothermal fish tolerate salinity up to 2 grams per liter, but the maximum salinity they can tolerate is about 9 grams per liter, in this case, salinity above 2 will reduce the growth of fish. Water hardness is also determined based on the concentration of calcium carbonate in the water. In terms of hardness, waters are divided into four categories: A: Soft waters: 0-75 mg per liter of calcium carbonate B: Medium waters: 75-150 mg per liter of calcium carbonate C: Hard water: 150-300 mg per liter of calcium carbonate D: Very hard waters: above 300 mg/liter of calcium carbonate

The main and most basic factor in raising fish is the amount of oxygen in the water. In tropical fish, the oxygen concentration is less than one milligram per liter. If it continues, it will usually be fatal, which is more common in hot days, in stressful conditions, when the fish are weak, and in such conditions that the fish suffer from lack of oxygen. It is very dangerous to become more sensitive. Casualties usually happen in the early morning or during the night. The fish gather at the entrance of the water, come to the surface of the water and swallow the air, and if this situation continues, they will become lethargic and die. 1. pale color of the fish skin 2. hyperemia of the gills 3. small bleedings in some parts of the fish body Solving the problem of lack of oxygen in the pool water: 1. Entering the water in steps 2. Adding fresh water that usually contains more oxygen 3. Devices that disturb the water

The muddy nature of the water prevents the penetration of light and slows down the biological production of the pool. These suspended materials gradually accumulate on the bottom of the pool and increase the sediments on the bottom and decrease the depth of the pool. These substances cause problems for fish, such as by entering the gills and sensitive body surfaces, it causes disturbances in the body's natural activities.