If it is a fry with a body length of 2-4cm, it usually takes about 1 year to raise it to 1 kg, while a fry with a body length of 3-5cm needs to be raised for about 5-8 months. However, due to different factors such as tilapia culture technology, culture environment and body length, the specific culture time needs to be determined according to the actual situation. Before breeding, a breeding pond should be built in a place with convenient drainage and sunshine, and the pond should be cleaned and disinfected to cultivate plankton. When the water temperature rises above 18℃, fry should be put in.

1. How long does it take for tilapia to grow from fry to catty?

1, culture time

The time required to raise the tilapia fry to 1 kg generally depends on the length of the fry. For example, it takes about 1 year for 2-4cm long fry to grow to 1 kg, while it takes about 5-8 months for 3-5cm long fry to grow to 1 kg. However, due to the differences in culture technology and culture environment.

2. Breeding method

(1) Build a culture pond in the sunny place, which has convenient drainage and no pollution source. The water depth is generally 1.8-2.5cm, and it is equipped with an aerator.

(2) Before stocking, the pond is cleaned and disinfected, and a proper amount of fertilizer is added to cultivate plankton.

(3) When the water temperature rises above 18℃, fry can be released.

(4) Generally, protein feed is the main feed, supplemented by green feed, and each feed is 1 time every morning and evening.

Second, what kind of tilapia is good?

1, tilapia with onion

(1) Nile tilapia has a smaller head, a higher back and a thicker body. It is a hybrid offspring of Oreochromis aurea and Nile tilapia.

(2) Nile tilapia can live in both fresh water and brackish water, the growth temperature is 24-35℃, it is anoxic, and it can grow normally in rich water with low dissolved oxygen.

2. Giffordshire tilapia

(1) Compared with other tilapia varieties, Gifu tilapia grows 5-30% faster, is easy to domesticate, has high meat yield, strong cold resistance and strong adaptability to the environment.

(2) Tilapia in Giffordshire has high salt tolerance, which is suitable for raising in the environment with salinity of 0- 12‰, but it is not suitable for raising when salinity is 32‰.

3. Red tilapia

Red tilapia (1) is a hybrid mutant of Nile tilapia and Mozambican tilapia, with red body color, no black membrane in body cavity, fresh and tender meat, fast growth and high yield.

(2) Red tilapia belongs to tropical euryhaline fish, which is relatively resistant to hypoxia. Its suitable growth temperature is 15-38℃, and its feeding habits are omnivorous and botanical. In nature, phytoplankton is the main food, and rice bran, corn flour, fish meal, compound feed and other foods can be eaten in artificial breeding.

4. Geely tilapia

(1) tilapia Geely is a new salt-tolerant variety suitable for commercial mariculture, with gray body color, orange or golden back color and pearl blue ventral color.

(2) Tilapia Geely fish can usually live in both seawater and fresh water, and belong to omnivorous fish.

5. Nile tilapia

(1) Nile tilapia belongs to euryhaline fish, which has strong hypoxia tolerance, but in order to ensure its normal growth, it is generally appropriate to keep the dissolved oxygen in water above 3 mg/L.

(2) Nile tilapia usually lives at the bottom of the water, but it will move to other water layers with the change of water temperature. For example, it will swim to the upper middle layer in the morning, move near the water surface at noon, move in the lower middle layer after night, and stay at the bottom layer at midnight and dawn.