The preparations before goldfish spawning mainly include the following aspects:
Preparation of the Spawning Pond (Tank)
Selecting an appropriate spawning pond area is of great importance. For a cement pond, depending on the number of broodstock, an area of 1 - 4 square meters is usually chosen, with a water depth of about 20 centimeters. Generally, it is advisable to stock 5 - 8 pairs of broodstock per square meter for spawning. For home breeding, an ordinary large washbasin or bathtub can be used, with 1 - 2 pairs of broodstock placed in it. The spawning pond should be set in a sunny, south - facing and wind - sheltered place to reduce water temperature fluctuations. At the same time, good air circulation is required to ensure that the water in the spawning pond has sufficient dissolved oxygen.
Preparation of the Fish Nest
Goldfish eggs are adhesive. Therefore, before spawning, a spawning nest made of aquatic plants should be added to the spawning pond. This allows the fertilized goldfish eggs to adhere to the aquatic plants, which is convenient for hatching. Commonly used aquatic plants include hornwort, myriophyllum, water hyacinth, water lettuce, hydrilla verticillata, willow roots, and palm fibers. These aquatic plants must be processed. Remove dead branches and rotten leaves, clean them thoroughly, disinfect them with drugs, and then rinse them clean with clean water before use.
Water Quality Management
Maintaining clean and stable water quality is the key to the successful breeding of goldfish. Transparent and non - toxic water quality can promote goldfish breeding. Adding a filter pump or water pump to create a suitable water flow environment is also beneficial to goldfish breeding.
Feed Management
Before the broodstock spawn, they must be fed with nutritious food, especially the breeding fish. Protein is very important for the development of the gonads. Therefore, try to use some live baits and high - protein foods. Feed them a large amount at the end of summer. When the water temperature drops in winter and the goldfish's appetite decreases, the amount of feed should be reduced.
Disinfection Treatment
The spawning pond and fish nest must be disinfected before use to kill pathogens and increase the hatching rate. Commonly used disinfection methods include soaking in a 2% saltwater solution for 20 - 40 minutes, or soaking in a 1ppm potassium permanganate solution for about 1 hour, and then rinsing them clean with clean water.
Through the above preparations, a good breeding environment can be created for goldfish, increasing the fertilization rate and hatching rate of fish eggs.