Long pontoon (lóng dǔn)
Scientific name Medium Giant Grouper , alias Pig Lamb Spot, for the warm-water marine demersal fish, which is long oval, lateral compression, the mouth is bigger! In the natural sea, the adult fish is generally 60 cm to 70 cm in length, the maximum body length of up to 2 meters, the weight is generally in the 30 kg to 40 kg or so, the big ones can reach 100 kg to 160 kg or more. According to records, in July 1999, Hong Kong fishermen in the Dongsha Islands had captured alive a female lobster weighing 180 kg, which had been regarded as the king of lobsters. And the latest report said that on the night of January 5, 2014, Malaysian fishermen caught a 200kg wild lobster in a trawl net and sold it for a whopping RM11,000 to the Chinese owner of a restaurant.
Legal protection
The wild pontoon is protected under the Aquatic Wildlife Protection Enforcement Ordinance, and is also a key aquatic wildlife species under the protection of Guangdong Province.
According to the Implementing Regulations for the Protection of Aquatic Wildlife, any unit or individual who finds injured, stranded or trapped aquatic wildlife due to mistakenly entering a harbor or bay, shall promptly report to the local fishery administrative department or the fishery administration supervisory and management agency under which it belongs to for the adoption of emergency rescue measures; or they can ask the nearby units with rescue conditions to adopt emergency rescue measures and report to the the competent administrative department of fisheries. The aquatic wildlife that has died shall be properly dealt with by the competent fishery administrative department. Aquatic wildlife caught by mistake during fishing operations shall be released immediately and unconditionally.
Economic value
Longspur is a kind of valuable fish in the ocean, its meat is delicious, nutritious and tastes better than the general grouper, and it can make many kinds of seafood dishes, with a scarce supply and an expensive price, in the market of Guangzhou, the wholesale price of each kilogram is as high as 190 yuan or so, and it sells for 200 yuan or so in the restaurants, but it still is favored by people. The price of seafood is very high.
Long pontoon for the original wild fish species can be artificially cultured, in Shenzhen, Guangdong Province, artificial propagation of seedlings and adult fish farming have been successful. According to reports, pontoon artificial culture growth rate, the use of cement pool for factory farming, stocking specifications for the weight of 22 grams, body length of 1.2 centimeters of the fish species, after 360 days of breeding, the average weight per tail increased to 1830 grams, the weight of the absolute weight of 1808 grams, in the sea-water fish culture species, such a speed of growth is extremely rapid, the effect of weight gain is obvious. According to the aquaculture test, after 1 year of breeding, the pontoon can reach 1.5kg~2kg per tail, and 12.5kg~15kg in the second year. In that year, the smallest individual is 750 grams, the largest individual reaches 2500 grams, and 70% of the weight of the fish are between 1500 grams ~ 2000 grams, the specification is more neat, so the economic benefits of pontoon aquaculture is quite considerable. Therefore, according to the market demand and resource conditions, actively study the development of pontoon fish culture.