1, appearance and color: the appearance of the golden crucian carp is similar to the common fish crucian carp, the engineering crucian carp body color back for the green-gray, white abdomen; head and other crucian carp is similar to the head, but smaller, with a pair of smaller whiskers protruding.
2, gonadal sterility, can not reproduce itself . Golden crucian carp are 3-fold fish, can not reproduce offspring, so it can be stocked in any aquaculture waters, will not cause other crucian carp, carp varieties of mixed resources, and will not be over-breeding leading to a decline in the quality of commercial fish.
3. The growth rate of golden crucian carp is fast in comparison, and the growth is not limited by sexual maturity.
Supplementary information:
One, the golden crucian carp is a new species of excellent freshwater fish breeding by combining conventional breeding and biotechnology breeding at the state-level Tianjin Changxin Aquatic Breeding Farm. This variety is obtained through distant hybridization with Scattered Scale Mirror Carp as the mother and Red Carp as the father, and can be cultured in ponds nationwide.
Chinese name
Golden crucian carp
Boundary
Animal kingdom
Organism
Fish
Characteristics
High meat content, high nutritive value, etc.
Two, common crucian carp
Engineered crucian carp
[Local name] Grass carp plate, Pleasant head fish, Carp Guazi, perch, crucian carp拐子, nesting fish, knife fish, crucian carp shellfish.
[Morphological features]The general body length is 15-20 centimeters. It is streamlined (also called pike-shaped), laterally compressed and high, with a thicker body and a rounded abdomen. Head short, snout blunt. No whiskers. Gill rakers long, gill filaments slender. Hypopharyngeal teeth in one row, flattened. Scales large. Lateral line slightly curved. Dorsal fin long, outer edge relatively straight. Dorsal and anal fin 3rd stiff spine strong, posterior margin serrated. Pectoral fin ends up to the beginning of the ventral fin. Caudal fin y forked. Generally the back of the body is gray-black, the ventral surface is silver-gray, and the fins are gray-white. The body color varies depending on the growing waters.
The belly is white-black and the back is black. Natural enemies from the water above to look down, because the black fish back and the river bottom silt with the same color, so it is difficult to be found; natural enemies from the water below to look up, because of the white belly and the sky color is almost the same, so it is also difficult to be found; often see some articles describe the early morning hours, "the east rose up the fish maw white," which is the reason. Belong to the protective color.
[Place of origin, season of production] All waters throughout the country year-round production, in February to April and August to December of the crucian carp is the most fertile. Carp belongs to the carp-shaped order, carp family, crucian carp genus. Jiangsu, Zhejiang area called the river crucian carp, the Northeast called crucian carp melon seeds, Hubei called the head of the fish and so on. Carp is widely distributed, except for the western plateau area, widely distributed throughout the country. The crucian carp is very adaptable, whether it is deep water or shallow water, running water or still water, high temperature water (32 ℃) or low temperature water (0 ℃) can survive. Even in the strongly alkaline waters of pH: 9, salinity as high as 4.5% of Lake Dari, can still grow and reproduce.