What bait does grouper like to eat?

Grouper is one of the most important cultured fish in coastal areas of China because of its delicious meat and high nutritional value. So, what kind of bait does grouper like to eat?

What kind of bait does grouper like to eat?

The larvae just off the pond like to eat bait dominated by zooplankton, such as rotifers, water fleas and so on. Groupers that grow to more than 2 centimeters like to eat bait such as surimi, earthworms and fly maggots, and the extra ones can be fed with artificial feed. After growing up, gradually increase the proportion of artificial formula feed, until all artificial formula feed is used, the daily feeding amount is about 20% of the body weight of fish, bait 3 times a day.

Second, what are the main points of grouper culture?

1. Seedling selection

Parent fish can be farmed with adult fish or caught in natural sea areas. The female fish weighs 5kg-8kg and the abdomen is dilated and soft, while the male fish weighs more than 8kg and gently presses the abdomen to drain semen. According to the proportion of 3 ∶ 1-8 ∶ 1, male and female parent fish are cultured or temporarily cultured in indoor cement ponds. Through artificial intensive cultivation, daily water change and pollution absorption, parent fish can be naturally spawned and fertilized without hormone stimulation, and high quality fertilized eggs can be obtained.

2. Daily management

Choose a reasonable density of cages and fish rafts to prevent the occurrence of hypoxia accidents. In addition to baiting, the growth, feeding, activity and body color of the fish should be regularly observed and checked, as well as whether the cage is damaged, the number of attached organisms, and regularly remove the fouling organisms attached to the cage, so as to maintain the smooth flow inside and outside the cage, regularly monitor the water quality and protect the culture environment. The monitoring of aquaculture water according to the first kind of sea water quality standards promulgated by the state is conducive to the normal growth and delicious meat quality of grouper and prevent accidents caused by the deterioration of water quality.

3. Bait feeding

Under normal circumstances, some food organisms such as rotifers and copepod nauplii should be kept in the pond to feed the larvae. Check the biological feed density in the pond water three times a day in the morning, in the middle and down. If it is found that the biological bait density is insufficient, it can appropriately supplement biological bait such as rotifers and copepods to keep the biological food in the pond sufficient. If there is no biological bait, you can properly sprinkle with bait such as spirulina powder, Prawn Crackers, etc. (according to the size of the fish fry, use 200 million 80 mesh sieve to filter and feed) to reduce the self-harm of fish fry and improve the survival rate of fish fry. In the later stage of breeding, appropriate amount of minced fish and shellfish can be added, or 0.15~0.3ppm powder formula feed can be fed directly. The feed density was checked for 2 to 3 times a day, and the feeding amount was determined by the fullness of the fry.

Grouper is expensive and has high economic value, so the prospect of artificial culture is very good.