How to raise pike with white spots, and the key points of pike with white spots.

The white-spotted pike has a slightly flat body length, a short tail stalk and a duckbill shape. There are many light blue spots or white spots on its side, yellow and red fins and black spots on odd fins.

Let's learn how to raise white-spotted pike and master the main points of white-spotted pike.

1. The ecological habit of pike is to live in rivers and lakes in cold regions under natural conditions. It is a large fierce fish with sub-cold water, with the optimum temperature of 0-30℃ and the optimum growth temperature of 20-23℃.

It is safe to spend the summer in the ponds in the lower reaches of the Yangtze River (about 2.5 meters deep).

The white-spotted pike feeds on zooplankton such as rotifers, small cladocera and copepods at the seedling stage, and preys on other fish when it is a little older.

In natural water, the maximum individual weight can reach 40 kg.

Young fish move in groups, and adult fish scatter for food. They are quick and agile, and often move in aquatic plants.

2. The body length of the juvenile pike was 8.5-9 mm when it came out of the membrane and 1 1- 14 mm when it was absorbed by yolk sac. At this time, it can be transferred to the fry cultivation stage.

Generally, cement pond culture and pond culture are the main methods.

(1) cement pool cement pool water surface area 10-60m2, pool depth of 0.5m ..

The stocking density per square meter is 100- 150.

Feed small zooplankton or other fry just coming out of the film, such as wheat grass.

Seedling raising in cement pond requires excellent water quality, and water change should be adjusted in time to ensure high dissolved oxygen in water and sufficient bait.

When the fish grow to 4-7 cm, if the bait is insufficient, they will kill each other, so the fry with a body length of 3-5 cm must be moved to Datang for adult fish culture.

(2) Pond culture The pond area is about 1-3 mu, and the water depth is1-1.5m. ..

15 Before releasing seedlings, clean and disinfect the pond with quicklime150kg per mu, and apply 250-300kg of manure to cultivate enough zooplankton as opening bait.

Three days before the seedlings are released, 2-3 kilograms of soybean milk is poured into the pond per mu to ensure that there are enough bait organisms for the bait fish to eat.

3. Management of white-spotted pike culture Check the situation and water quality of bait fish every day. White spotted pike likes clean water and needs high dissolved oxygen. If the dissolved oxygen is lower than 1.8 mg/L, it will float and die.

Therefore, in the daily management process, dissolved oxygen should be controlled above 3 mg/L, and fresh water should be added frequently to keep the water fresh.

At the same time, it is necessary to regularly check the growth of pike and the collocation of bait fish. Because the white-spotted pike lives in the middle and lower layers of water, it is difficult to see it at ordinary times, so it is necessary to cast a net for fishing inspection.

When the water temperature rises in summer, fresh water should be injected frequently, aquatic plants should be installed on the water surface to raise the water level, and the water temperature should be kept below 30℃ as far as possible. If conditions permit, groundwater should be used regularly to cool down, and the effect is good.