Carp
This fish is known as one of the most important farmed fish in the world and is widely cultivated in Europe, Asia and the Far East, and its wild native type called Sazan is found in the southern waters of the Caspian Sea. Its breeding type is cultivated all over the country.
The common carp has large scales and an extended dorsal fin. The number of lateral line scales in this fish is 30-32.
It has a forward-protruding mouth. Common carp is distributed in the basins of the Caspian Sea, Tajen River and all the watersheds of Iran. The maximum length of this fish is 150 and the average is 38 cm. The body of this fish is somewhat long and its length is 3 times of its height. The head of the fish is big and the snout is diminutive. It has a short ventral fin. In the dorsal fin, there are 3 to 4 hard spines and 15(16) to 21(22) soft radii and branches. There are also 3 hard spines and 5 or 6 soft branch rays in the pubic fin.
This fish is omnivorous and eats small creatures of the water bed, worms, crustaceans, baby insects and even animal and plant wastes, animal carcasses, fish eggs and even babies, in addition to manual and cereal food such as wheat, barley, They use wheat bran, wheat flour, fish meal, rice bran, tomato pomace, soybean meal, cotton seed and table scraps.
At temperatures below 7°C, they hibernate in groups in groups. It lives in fresh water and likes warm, calm waters covered with plants.
The temperature and food is effective in the growth of carp, and 20 degrees Celsius is the best temperature for growth.This is one of the most important farmed fish in the world due to its rapid growth, the possibility of artificial reproduction, intensive feeding and maintenance and having high resistance to physical and chemical factors of water.
