[Carp] Carp variety carp grows habitual habit of carp, the breeding and reproduction of carp

Carp Brief Introduction

The carp is called carp, Maozi, etc., which belongs to the family of carp.The body is flat and the abdomen is round, with a horseshoe shape, with 2 pairs.The base of the dorsal fin is long, and the dorsal fins and anal fins have a thick spine with a tough jagged.The body is golden yellow, orange -red in the tail fin.The carp usually inhabit the bottom of the rivers, lakes, reservoirs, and ponds.

Carp

(1) Wild carp: Wild carp usually has a certain breeding scale in the local area.Such as Yuanjiang carp, South China carp, Heilongjiang wild carp, Xiangjiang wild carp, Yellow River carp, etc.

(2) Artificial breeding varieties: Through the system selection of wild species (local varieties), we have Xingguo Red Carp, Polybao Red Carp, and German mirror carp selection system.Jianjian: Based on the offspring of the hybridization of the lotus carp and the Yuanjiang carp as the basic group, combined with the selection of the family system, the excellent new varieties of the hereditary traits of the interdental and female nuclear development technology.

(3) Hybrid carp: The promoted hybrid carps are mainly: rich carp, lotus and Yuan carp, three hybrid carp and hibiscus carp, and so on.

(5) Introduction of varieties: my country has introduced Soviet -scale carp, loose -scale mirror carp, German mirror carp, etc. from abroad.

Carp habit

The carp is doubtful and doubtful. Most of the time he lives on the bottom of the water. He likes to find food with arched mud, and spit out a string of air bubbles on the water surface. According to the bubbles on the water surface, you can conclude whether it is a carp, an experienced fisherman.Even the size of the fish can be determined. Although the carp is very mixed, most of the time I like food vegetarian.

Carp breeding method

(1) Environmental requirements

Koi and goldfish are not strict with water temperature and water quality. The suitable temperature range is 2 C to 30 C. C to 25 C; oxygen with sufficient demand is suitable for living in a water quality environment with slightly alkaline and low hardness.

(2) Food requirements

Koi is a omnivorous fish. Generally, it can be eaten by software animals, high -level aquatic plant fragments, benthic animals or small algae or artificial synthetic granules.

(3) fish selection

You should choose fish species with health, no injuries, no scales and other diseases.

(4) breeding density

Ordinary carp is a very adaptive fish, and koi also retains this characteristic.They can be raised anywhere in the fish tank, large to any part of the Outdoor pond, and they soon grow to 30 cm long or larger, so the traditional indoor fish tank is not as good as a circular plastic basin.Koi is cold -water fish, so the water depth of Koi in the hottest places in the summer is best half meters or deeper.

The density of the fish pond density can refer to the density table of the koi carp in the fish pond; the density of the aquarium is generally 60 cm 30 cm 15 cm.8 tails can be released; 10 tails can be released at 110 cm 30 cm 50 cm.

(5) bait feed

Koi is a omnivorous fish. It is best to feed artificially synthetic particles, bait, bean cakes, vegetable cakes, bread dandruff, fish and insects, clams, crab meat, Wuping, duckweed, etc.It is best to feed the bait regularly to avoid reaction to the fish.

Carp breeding method

(1) Eggs are the reproductive methods of most fish.The carp produces eggs to the body, embryo develops in vitro, and the embryonic development depends on the nutrients in the eggs during the development of the embryo.

(2) Estalidal fertilized eggs develop in the female reproductive tract. The development of carp mainly relies on yolk nutrition, has no nutritional relationship with the mother, or the mother's reproductive tract mainly provides water and minerals, and finally the mother -in -law produces psionic fish.Such as a peacock fish.

(3) The body of the gill fish of some gill fish has a blood circulation in the mother's blood circulation. The nutrition required for embryo development not only depends on its own egg yellow, but also depends on the mother's body.There are some protrusions on the falling egg Tube wall where the embryo development is connected to the embryo body, forming a placenta -like structure. The mother is given nutrients to the embryo through this structure.Such as Gray Star Shark.