What kind of food does turbot eat?

Turbot is a kind of precious flounder native to the coast of Europe. in fish taxonomy, it belongs to the genus Paralichthys olivaceae. It is a carnivorous fish that lives on the sandy seafloor in shallow sea. it mainly feeds on benthic invertebrates and other fish. let's take a look at what kind of food the turbot fish eat.

What kind of food does turbot eat?

In the natural sea area, the turbot has the ability to ambush and prey. The larvae mainly feed on crustaceans. As the fish grows, it gradually feeds on all kinds of fish. The prey usually includes spotted mullet, striped mullet, white mullet and grass shrimp, and it is easy to domesticate its feed formula feed (for example, expanded fish feed, etc.) in intensive culture.

The growing environment of turbot fish

1. Temperature: the survival water temperature of adult fish is 2: 36 ℃, the suitable growth temperature is 16-32 ℃, and the optimum growth water temperature is 21-26 ℃. The water temperature during the nursery period is generally 16-20 ℃ (Guangdong is suitable for breeding all the year round).

2. Salinity: the optimum salinity in the seedling stage is 18 ~ 30 ‰. After metamorphosis, the tolerance range of salinity from juvenile to adult is very wide, and can grow normally in the range of 0 ~ 30 ‰.

3. Illumination: turbot is benthic fish, the light should not be too strong, 500-1500 lux is suitable. The light should be uniform, soft, not dazzling, and feel comfortable. The light rhythm is the same as that of natural light.

4. Water quality: the water quality is clear and meets the national fishery second-class water quality standards. the pH of the water body should be higher than 7.3. it is best to maintain between 7.6 and 8.2, and the dissolved oxygen is more than 6 mg per liter.

Feed selection of turbot fish

1. Meet the nutritional needs: the feed used in turbot culture should be suitable for the nutritional needs of different growth stages, including an appropriate amount of vitamins, minerals and highly unsaturated fatty acids, etc., and the feed should be easy to feed. the feed particles are well formed and are not easy to collapse in water.

2. Select regular merchants: when choosing and purchasing feed, check whether the feed label indicates the following: it should be marked with the words "this product meets the feed hygiene standard" to clearly indicate that the product conforms to the provisions of GB13078. Indicate the guarantee value of the main components, that is, the content of crude protein, crude fiber, crude ash, calcium, total phosphorus, salt, moisture, amino acid and so on. Indicate the standard number, production license and product approval number for the production of the product. Specification, model, net weight, production date, shelf life, name and address of producer, etc.

2. Prohibition of wet feed: in order to prevent pathogenic organisms from being brought into fish ponds, it is recommended that industrial farming prohibit the use of wet pellet feed.

4. Choice of fresh feed: jade fish, sardines, bamboo pod fish, mackerel and other sea-caught fresh fish are the main raw materials for making turbot feed. Fresh fish generally account for 50% or slightly higher of the feed. Fresh fish must be fresh and washed before processing. Must not use mixed fish that have gone bad and have a bad smell.