CATDOLL : CATDOLL: Can mandarin fish be raised in a cage?

1. Can mandarin fish be raised in fish cages?

It is completely possible to raise mandarin fish in fish cages. As long as you add oxygenating equipment and maintain sufficient oxygen, mandarin fish can be raised freely!

Yes, as long as you feed it carefully there will be no problem

2. Can mandarin fish be farmed in cages?

Yes, nowadays most mandarin fish are farmed. Raising them in cages allows for faster water exchange and better quality.

3. Raising Mandarin Fish, What Do Mandarin Fish Eat?

Mandarin fish is a typical carnivorous fish that likes to eat live bait and often swallows live fish fry that are longer than its own length, such as silver carp, grass carp, bighead carp, dace, bighead carp, bream, and fine-scaled oblique-jaw carp.

At different stages of growth, the fish feed on different things. Fish under 15 cm in length prefer shrimps and small fish, while fish over 25 cm prefer larger fish such as bream and carp, as well as flat and slender striped fish. When they are hungry and have no other food, they will even eat each other to survive.

Feeding of Mandarin Fish

Bait fish: Mandarin fish naturally feed on live fish. There are generally three sources of bait fish:

① Buy fish of appropriate size and raise them in a dense environment, and feed them at any time;

② Cultivate and collect wild fish fry. Each mandarin fish pond should be equipped with about 3 bait fish cultivation ponds, which can be used to breed carp, crucian carp or some wild fish that reproduce early and have a large reproduction volume, to breed a large number of fish fry for the aohua fish to eat;

③ Directly stock bait fish. In order to save fish ponds, some small fish with a high reproduction rate, such as wheatear fish and silver carp, can be directly placed in the aohua fish pond to meet the needs of aohua fish.

Feeding: To grow a 0.5g (3cm long) Aohua fish fry into a 0.5kg commercial fish, you need to consume about 5,000 bait fish (about 3kg). Feed fish should be released in time according to the growth of the fish and weather conditions. It is best to release it once every 3-5 days to keep a certain density of bait fish in the pond. If there is sufficient bait source, you should try to feed as much as possible.

Osmanthus fish generally eat live bait

Seedling cultivation

According to the feeding characteristics of sweet-scented osmanthus fish fry, the seedling cultivation should be carried out in cement pools, ring channels or cages. The cement pool area should be 10-20 square meters and the water depth should be 1.1-1.3 meters. The fish pond should have water inlet and outlet equipment and micro-flow to keep the water fresh, so as to facilitate the sweet-scented osmanthus fish to swallow the fry. In addition, a matching domestic fish fry cultivation pool should be attached to ensure sufficient supply of live bait. The stocking density of fry is: 3000-4000/cubic meter for cement pools and ring channel pools, and 2000-3000/cubic meter for cages. When the fry grows to 1.5-2 cm, the density should be reduced by half and cultivated in a sparse manner. Within one week after the fry are put into the pond, the newly hatched small fish flowers should be fed, and then the fry with a size 2-3 sieve positions smaller than the sweet-scented osmanthus fish should be gradually fed to facilitate the feeding of the sweet-scented osmanthus fish. With sufficient bait, the fry can grow to 3 cm in size after 10-15 days of cultivation, with a survival rate of about 60%. At this time, they can be placed in the fish pond for adult fish breeding.

Fish farming

1. Main pond culture

The pond area should be 1-3 mu and the water depth should be 1.5-2.0 meters. It should be easy to drain and irrigate, with fresh water quality, micro-flow water and aerator. The bottom of the pond should be sandy or muddy. Before stocking fish, the pond should be cleaned and 1000-1500 sweet-scented osmanthus fish should be stocked per mu. At the same time, 500-1000 silver carp and bighead carp can be mixed, or silver carp and bighead carp broodstock can be mixed to adjust the water quality. During the breeding period, wild fish should be fed reasonably according to the fish stock, and high-end fish should be raised with low-grade fish. Or after the pond is cleaned, basal fertilizer should be applied first to cultivate water quality, and then 800,000-1 million dace fish should be put per mu. Half a month later, when the dace fish grow to 4-5 days, half of the original pond water should be discharged, and new water should be added. 700-900 7-day-old (about 0.5 grams) sweet-scented osmanthus fish should be put per mu. You can also first standardize and rough the osmanthus fish, and stock 5,000 osmanthus fish fry per mu. After more than 40 days of cultivation, when the total length reaches 12 cm and the weight is about 50 grams, you can divide the ponds and raise them, and stock 500-700 per mu. This can speed up the growth of osmanthus fish and improve the survival rate. If there is enough bait, it takes about 180-200 days for the summer flower to grow into an adult fish weighing more than 400 grams. Each mu can produce 100-150 kg of adult fish.

During the breeding period, the following management work should be done.

1. Cultivate good bait fish. Since sweet-scented osmanthus fish only eat live bait, this is the key to raising sweet-scented osmanthus fish well. The main ways to solve the problem of live bait are: ① Before the sweet-scented osmanthus fish is put into the pond in summer, first cultivate the fry of the four major carps in the pond; ② When releasing the osmanthus fish fry, put in about 50 grams of crucian carp or 20-30 grams of fish, let them reproduce in the sweet-scented osmanthus fish pond by themselves, and provide suitable bait for the sweet-scented osmanthus fish; ③ Cultivate live bait at the same time. Generally, it is required that one mu of sweet-scented osmanthus fish should be equipped with 3 mu of bait fish pond, which is specially used to cultivate fry of bream, dace, silver carp, bighead carp, etc. to ensure daily supply; ④ Collect live bait from other water bodies and put it into the sweet-scented osmanthus fish breeding pond.

2. The bait fish should be slender, spineless and easy to swallow, such as bream, dace, silver carp and bighead carp.

3. The size of bait fish should be gradually increased from small to large according to the growth of sweet-scented osmanthus fish. Generally, it should be 3-5 sieve positions smaller than sweet-scented osmanthus fish.

4. Master the feeding amount of bait fish. In the first month after stocking sweet-scented osmanthus fish, feed 70% of the total weight of sweet-scented osmanthus fish, and release it once every 5-7 days; in the second month, feed 30-50% of the total weight, and release it once every 3-5 days; after the third month, feed 10% of the total weight every day. In short, make sure that the sweet-scented osmanthus fish is full and eats well. Generally, it takes about 2.2-2.5 kg of bait fish to raise a 7-day (3 cm) fry to a commercial fish of more than 400 grams, and the breeding time is about 200 days.

5. Adjust the water quality. Sweet osmanthus fish has high requirements for water quality. During the breeding period, the transparency of the pond water should be maintained at about 40 cm, and the pH value should be controlled above 7.8. Water should be changed and refilled in time at ordinary times, especially in the late growth period from September to October. Water should be drained and refilled every two days, and about 1/3 of the water should be changed each time. At the same time, the aerator should be turned on in time to promote the growth of sweet osmanthus fish.

(ii) Polyculture

1. In the domestic fish broodstock pond, 30-50 3cm sweet-scented osmanthus fish can be placed per mu. Wild fish in the broodstock pond are mainly used as bait. Generally, they are raised for 4-5 months and can grow to commercial fish of about 300 grams, which can be put on the market in the same year. 5-7.5 kg of sweet-scented osmanthus fish can be produced per mu.

2. Mixed breeding in adult fish ponds In adult fish ponds with more wild fish, 30-40 sweet-scented osmanthus fish can be released per mu. However, several points should be noted: ① The water quality in adult fish ponds should not be too fertile; ② The stocking time of sweet-scented osmanthus fish should be pushed back three or four months compared with domestic fish; ③ Domestic fish, summer fish or other carnivorous meat should not be released in adult fish ponds; ④ Because sweet-scented osmanthus fish are sensitive to drugs, the drug concentration should be accurately calculated when applying fish disease drugs in ponds. In the hot summer and autumn seasons, low doses should be used or drugs should be stopped; ⑤ Start aeration in time and drain the pond water regularly; ⑥ At the end of the year, the pond should be dried up, and the method of irrigating the river to introduce wild fish for sweet-scented osmanthus fish to eat can be adopted. A certain number of tilapia can also be raised in adult fish ponds to breed fry for sweet-scented osmanthus fish to eat.

Fish disease prevention

During the seedling cultivation period, sweet-scented osmanthus fish is easily infected with diseases such as water mold, gill rot, wheel worm, anchor head fish, and oblique tube worm. If not treated in time, it is easy to cause a large number of deaths. It can be prevented and controlled by conventional methods.

As for small fish and shrimp, they should be eaten alive or dead, but also should be palatable and not too big to be swallowed.

Mandarin fish food

Osmanthus fragrans