Paddlefish practical breeding technology introduction

Paddlefish, also known as spoonfish, is a type of fish that lived in the Mississippi and Missouri river basins 300 million years ago, that is, before the dinosaur era. It is the largest and oldest fish in the individual species unique to North America. It was reported that before 1900, a paddlefish weighing 97 kg and a body length of 1.8 meters had been caught. However, according to accurate records, in 1972, one of the world's largest paddlefish was caught on the Dream River in the Missouri River in the United States, and its body weight was 64.7 kg. In 1992, the second large individual paddlefish was caught in the River Ozark, Missouri, USA, and its body weight was 58.9 kg. The paddlefish currently caught in rivers has an average weight of 18 kg. The paddlefish's white flesh is delicious and has no fishy smell, similar to that of marine fishes, such as swordfish. Paddlefish is not only delicious but nutritious. It is a delicacy, and paddlefish eggs are valuable ingredients in the international market for black caviar sauce. Therefore, the economic value of paddlefish is very high. Because paddlefish are different from common fish in their body type, swimming and feeding have their own characteristics. Therefore, paddlefish is also a valuable ornamental fish.

According to the life style of paddlefish, it is most suitable for artificial breeding in our country. As a cultured variety, it has the following advantages:

1. Wide temperature range

Paddlefish is a wide temperature fish, neither afraid of low temperatures, but also endure high temperatures. In winter, even if the water surface is frozen, as long as there is still enough dissolved oxygen in the water, it can live in the water under the ice. In summer, the water temperature on the surface of the pond often exceeds 35°C, and the paddlefish cultivated in the pond can still live normally.

2. Fast growth

Paddlefish is one of the fastest growing fish among freshwater fish. The fry hatched at the end of the year was raised to the end of the year, and the body weight could reach 500 grams. One year old fish can weigh about 1 kilogram. The paddlefish introduced by the Hubei Provincial Aquatic Products Bureau in the United States in 1990 were stocked in reservoirs and began to be caught in 1999, weighing 22.5 kilograms. On average, each end increases the weight by 2.5 kilograms.

3. Wide range of feed sources

The key food for paddlefish is zooplankton. It can also feed on insect larvae, otters, and artificial feeds. Numerous zooplankton species are found in natural waters and are the largest food storage for paddlefish.

4. Easy to catch

Paddlefish are mild in temperament and not good at jumping. Their habits are similar to those of squid. The paddlefish, which was raised in the pond, was caught on the net and caught on the first net. The catch rate was up to 90%. In large and medium-sized waters, most paddlefish can be picked up and caught using fences, catching, catching, thorns, and other fishing methods.

5. Introduction will not damage the ecological environment of natural waters

In the large and medium-sized waters, the breeding paddlefish species are released without fertilization and artificial compound feed. Paddlefish do not ingest aquatic plants, so the release of paddlefish will not destroy the natural ecological environment in the waters.

6. Low production costs

In fish farming, the cost of general feed accounts for 20% to 30% of the total cost of aquaculture production, of which the cost of feed for farming premium fish accounts for a higher proportion of total production costs. When paddlefish are released in large and medium-sized waters, the amount of stocking is determined according to the amount of natural food in the water, thus saving feed costs. Paddle-cultivated paddlefish in ponds can adopt polyculture methods or fertilize zooplankton in the waters. They only spend a small amount of money on the purchase of fertilizers and can also save feed costs, resulting in low production costs.

7. High economic value

Eel meat is expensive in the international market. China's aquaculture and imported Russian quails have reached market prices of 250 to 300 yuan per kilogram, and paddlefish meat is superior to other carp, and is sold per kilogram. Price is at least $300; ​​paddlefish roe seeds, can be processed into caviar, expensive in the international market, up to $250 per kilogram; paddlefish can also be sold as ornamental fish, in the international market per inch per inch (2.5 cm) The price is 1 US dollar, and more than 4 inches (10 centimeters), the price is 2 dollars per inch. In the Chinese market, the price of individual small fish species with a length of 5 centimeters each is 10 yuan for each sale, and large-sized fish species with an individual length of 15 centimeters each sell for about 25 yuan.

In summary, the development of paddlefish aquaculture can increase new varieties of freshwater aquaculture. It has a great effect on the adjustment of freshwater aquaculture species structure in China, promote the comprehensive development and utilization of fish culture in large and medium-sized waters, and increase the economic benefits of freshwater fish culture. Significance. Our country has a dotted pond, tens of millions of acres of refined fish ponds and a large number of lakes and reservoirs, etc. These waters can be comprehensively utilized to develop the breeding paddlefish. In the Yangtze River and other rivers, it is also possible to release the proliferation of paddlefish. Therefore, the development of paddlefish aquaculture production in China has broad prospects for development.

Small 2D LiDAR Sensor

IT02S, is JRT new product in the early 2019, which is a single-point LiDAR sensor, also called tof distance sensor. With a micro size of 46x17x7mm, customers can widely use in many Laser Measurement Solutions. The lidar distance sensor can measure 12m short-range with high frequency up to 100hz. It's great for Unmanned Aerial Systems. If you need us send you data sheet and spec for this products, offering sample as well, pls tell us, thank you.

IT02S Mini Tof Sensor Module Diagram

Parameters of IT02S:

2D Laser Distance Sensor,2D Lidar Sensors,Tof Lidar Distance Sensor, Flight Distance Sensor

Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com