How to raise tiger-headed sharks

Tiger head shark is a kind of small fleshy wild economic fish with a small and lovely appearance, so many people like to raise it as an ornamental fish. How to raise tiger head sharks?

1. Pond construction

The suitable pond area for raising tiger head sharks is 2000-3000 fish, and the water storage depth is about 2000-3000 fish per mu. The suitable pond area for mixed culture of tiger head shark is 100 fish / mu.

2. Water temperature requirements

Tiger head sharks inhabit the middle and lower layers of the water, and the suitable temperature for growth is 22-26 degrees. When the water temperature drops to 14-18 degrees, the activity will decrease, and shock will occur when the water temperature is 12-13 degrees. Therefore, cold shelters are usually built when breeding.

3. Stocking density

The stocking density of tiger head sharks depends on the actual situation, usually 2000-3000 fish per mu of about 3-4 cm. When mixed with silver carp, grass and tilapia, 100 / mu.

4. Feeding requirements

Tiger head shark feed requirements are not high, crude protein can be more than 27%, according to the situation, you can choose water hyacinth, macaroni, mixed with crushed corn, bean dregs to feed. When feeding, it should be regularly, positioned, qualitatively and quantitatively put, and the protein of formula feed should be more than 40%.

5. Water quality management

In the process of feeding, we should pay attention to the change of water quality, change water frequently and feed less frequently to ensure the healthy growth of fish fry.

6. Disease prevention and treatment

Tiger head shark will appear rotten fin disease, white spot disease and other diseases during the growth period, so prevention and control measures should be taken in advance, and timely symptomatic treatment should be taken for the disease.

(1) rotten fin disease: the symptoms are that the fish's caudal fin and dorsal fin are congested and ulcerated, the diseased fish do not eat, and a large number of fish die. The cause is caused by infection bacteria, which is a serious infectious disease in the seedling stage. The pond water can be disinfected with 15 mg / L formaldehyde or 10 mg / L potassium permanganate or 10 mg / L 20 mg / L bleach, and antibiotics can be added to the mixed feed. Every thousand fish are treated with 30 tablets of oxytetracycline for 7 days continuously, and the diseased fish can be cured.

(2) White spot disease: also known as melon disease, the disease is easy to occur when the water temperature is 20-24 ℃. The disease is characterized by white spots on the body surface, empyema in severe cases, and emaciation of fish. It can be sprinkled with 0.1mg / L mercurous nitrate in the whole pool and repeated again after 3 days. The small melon insects will fall off automatically.