Hippocampus is a small fish in shallow water. It swims slowly and usually wraps its tail around seaweed or other objects. The optimum temperature range is 12 ~ 33℃, and the optimum water temperature is 28℃. Hippocampus has strong adaptability to salinity and can live in the salinity range of 10 ~ 30 ‰. The adaptability of new seedlings to salinity is poor, which is generally required to be above 15‰. It is required that the dissolved oxygen in each liter of water should be above 3 mg. PH6.5~8. The diet of hippocampus is mainly small crustaceans. The hippocampus grows faster. When the water temperature is above 20℃ and other conditions are suitable, hippocampus can breed all year round. During the breeding season, the sexually mature parent hippocampus is in estrus in the morning, and the female hippocampus discharges its eggs into the pouch of the male hippocampus. It takes about 8-20 days to hatch the young hippocampus. After giving birth to a young hippocampus, the parent hippocampus has suitable water temperature and sufficient bait, and can mate in estrus quickly. In 1 year, the maternal hippocampus can be produced several times to more than 10, and every time 10 ~ 1000 times or more. Hippocampus usually produces seedlings before dawn.

Aquaculture pond:

The bottom and periphery of the cement pool are light black, with water injection and drainage devices, and 2/3 of them are buried underground, which makes the pool water temperature relatively stable. Outdoor swimming pools should have sunshade facilities. Nursery pond: used to cultivate new seedlings and intensive parent hippocampus, with an area of 1 ~ 2 square meters and a depth of 0.6 ~ 1 m. Juvenile fish pond: used to cultivate young seahorses and intensive parent seahorses from 15 days to less than 6 cm. The area is 2 ~ 6 square meters and the depth is 0.8 ~ 1 meter. Fish pond: used to cultivate young seahorses over 6 cm until they become seahorses or parent seahorses. The area is 5 ~ 20 square meters and the depth is 0.8 ~ 1.2 meters.

Fish feed

The bait mainly includes copepods, mysids and other small crustaceans. The bait is caught in harbors, ditches, salt pans and ditches by trawls and plankton nets. Culture of copepods: firstly, clean the pond with 2ppm derris extract, and then filter the water with 80 mesh screen wire to introduce copepods. Fertilize at the same time to make the transparency between 35-50 cm. Copepods can be captured after breeding for 20 days in the water. Culture of Myzus mystii: After cleaning the pond with 2ppm derris, introduce Myzus mystii, apply fertilizer appropriately, feed fish meal and bean cake powder, and catch Myzus mystii after breeding to a certain density.

Feeding and management

Parent seahorses are generally cultivated sparsely, and 20 are stocked per cubic meter of water. In the non-breeding season or when sexual maturity is not reached, it is best to raise males and females separately. Intensive feeding of hippocampus-loving bait requires freshness, palatability, high quality and sufficient quantity to make its gonad develop normally. Fresh water quality and stable water temperature are required. Be careful when operating to prevent damage to the anterior hippocampus. When the water temperature is above 20℃, male and female seahorses can keep the ratio of 1: 1 for mating. When male seahorses with embryos are found in the nursery bag, they can be moved to the nursery pool for careful reproduction. Before dawn, the hippocampus produces seedlings for several minutes to 10 minutes at a time, with short seedling production time and good quality. If the seedling raising time is long, the quality of seedlings will be poor. After the hippocampus is delivered, the parent hippocampus can still be moved to the intensive culture pool to avoid swallowing the small hippocampus.

The development of hippocampus can be divided into three stages: the seedling stage is from newborn seedlings to 6 cm long; The valence band of offspring hippocampus is from 6-10 cm; The adult price band is above 10cm. The stocking density of hippocampus gradually decreases with the increase of fish body, such as body length 1 cm, and 4000 fish are stocked per cubic meter of water; The body length is 6 cm, and 5000 tails are stocked per cubic meter; Body length 10 cm, stocking 150 fish per cubic meter of water; Adult fish are stocked with 30 to 40 fish per cubic meter of water.

The suitable water temperature of hippocampus is 20 ~ 30℃. Hippocampus has outdoor wintering and indoor wintering. In the south, you can use double nylon membrane to keep warm or move seahorses to indoor swimming pools. Heating or boiler heating can be used in the north. The water temperature is controlled at about 20℃ during wintering. The water quality should be fresh and pollution-free, with a transparency of about 35cm and a specific gravity of 1.006 ~ 1.022. When the water temperature is high, you can change water every day, all or part of it. When the water temperature is low, 2 ~ 3 days can be changed to 1 time. However, when changing water, pay attention to the temperature difference should not be too large, especially when the new seedlings require stable water temperature.

Hippocampus likes to eat live bait, but fresh bait and frozen bait can be domesticated and fed. Generally, the bait is fed twice a day, and a small amount can be used when the seedlings are small. Special attention should be paid to feeding freshwater cladocera, and the amount of bait should be strictly controlled. The bait size should be appropriate. Newborn seedlings feed on rotifers and copepods, while older hippocampus seedlings feed on copepods, juvenile mysids, young shrimps, shrimps and small poda. Hippocampus with a body length of 6 ~ 10 cm eats copepods, mysids, shrimps and crustaceans. Hippocampus over 10 cm in length also eats copepods, mysids, shrimps and cephalopods. Hippocampus eats during the day, and the amount of food intake is related to the quality of water temperature and water quality, so it needs to be fed according to specific conditions.

Harvest and storage

After harvesting the reared individuals 1.5 years, the drying rate can reach above 30%. Wash the hippocampus with clear water first, and then dry it. When the weather is good, it usually takes three days. If the weather is bad at harvest, you can dry it, but don't burn it. First put some lime in the bottom of the container, and then put in the dried or dried hippocampus. The container mouth is tightly tied with double-layer plastic film.