Introduction of goldfish culture technology

Goldfish culture in China has a long history and a long history. As early as the Southern Song Dynasty, raising goldfish in the palace and in the courtyard of dignitaries' residence has been widely popular. at that time, goldfish was only the high-end pet of the palace aristocracy and could not enter the homes of ordinary people. With the development of society and the improvement of people's living standards, goldfish farming has spread to thousands of families and has become a public pet in modern times.

Family cultured goldfish are generally divided into three categories according to their form and location: courtyard culture, balcony roof culture and aquarium culture.

Courtyard farming: refers to opening up small ponds to raise goldfish in villas and family farms, with strange stones and planting plants, which not only cultivate oneself, but also beautify the environment and make people pleasing to the eye.

Balcony roof aquaculture: generally in Jiangsu and Zhejiang, many people use this method, must first do a good job of waterproof, prevent pool water leakage, set up sunshade, prevent the summer sun direct water temperature is too high, at the same time next to the aquaculture pond to design the reservoir and operation channel.

Aquarium culture: general goldfish lovers are willing to choose aquarium fish culture, on the one hand, the price is affordable, on the other hand, it is easy to appreciate, in the case of living space at home is not spacious, put a fish tank in the corner, can add a lot of interest to the living room.

Male and female goldfish are distinguished from the following aspects:

(1) differences in external forms:

The main results are as follows: (1) the difference in figure: the male goldfish is generally slightly longer, while the female goldfish is shorter and round. During the pregnant period, the abdomen of female fish is larger than that of male fish.

(2) the difference of tail stalk: the male is slightly stronger than the female.

(3) the difference of pectoral fin: after careful observation, it was found that the male fish was slightly sharp and long, and the first pectoral fin thorn was thicker and stiff; the female fish was short and round, and the first pectoral fin thorn was not too hard.

(4) the difference of genitalia: viewed from the belly, the male genitalia are small and narrow and concave, while the female genitals are large and slightly round and protruding outward.

(2) the difference of color: goldfish with different males and females have slightly different body colors. Males are generally bright, while females are slightly lighter. In the period of reproduction and development, the body color of males is more bright.

(3) feel and movement: hold the abdomen of the fish lightly with the hand, the middle finger and ring finger feel that there is an obvious hard line in the abdomen of the male fish, while the abdomen of the female fish is softer. When walking past the edge of the fish pond, the male fish swims fast and agile, while the female fish moves slowly.

(4) chasing stars: with the rise of temperature, goldfish will appear the second feature during the spawning period-chasing stars, which is the easiest and most accurate time to identify the sex of goldfish, and it is also the easiest way to identify the sex of goldfish. The star pursuit of the male fish appears on the first thorn of the pectoral fin and the edge of the operculum. For a long time, there is a star pursuit on each fin of the whole pectoral fin, which is obvious at the front and can only be observed carefully at the back. This kind of rough white spot is chasing stars.

Using the above identification methods, we must also rely on many years of breeding experience and careful observation in order to accurately identify the male and female of goldfish.