Chinese paddlefish Psephurus gladius

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Basic information

binomial nomenclature Psephuyrus gladius scientific name Chinese paddlefish binomial nomenclature Psephuyrus gladius Latin name order Acipenseriformes nickname Elephant fish,swordfish, anglerfish, ancient called tuna. suborder Acipenseroidei Circle Animalia family Polyodontidae phylum Chordata subfamily Scaphirhynchinae subphylum Phylum Chordata generic name Scaphirhynchus class Osteichthyes Species chinese paddlefish Subclass Actinopterygii distribution area Specially produced in the Yangtze river in China, along the east coast of the yellow sea.

Appearance

The underbelly of the Chinese paddlefish is white, and its back and head are grey. They reach sexual maturity at age seven or eight, with a typical body length of 2 m (6 ft 7 in) and a weight of 25 kg (55 lb).[citation needed] Anecdotal reports indicate the Chinese paddlefish can reach 7 m (23 ft) in length and weight up to a 500 kg (1,100 lb), or even several thousand pounds. Limited research has been conducted on the species maximum size and weight as a result of its endangered status and lack of sightings over the years. A more generally accepted maximum size is 300 kg (660 lb) in weight and 3 m (10 ft) in length,although the specimen caught in 2007 was 3.6 m (12 ft) long.

Life habits

The Chinese paddlefish is a large and fierce fish, and the adult fish and young fish's food are mainly fish. They also eat small amounts of shrimp, crabs and other animals.It is also a large fish.According to a famous zoologist bing chi professor, had captured a tail 7 meters long in nanjing weighs a ton of individuals, sichuan fishermen have "one thousand jins la zi (Chinese sturgeon) ten thousand jins like (paddlefish)".

Reproduction

The first sexual maturation age is 7-8 years, the individual length is generally about 2 meters, and the weight is over 25kg.The reproductive season is about 3 to 4 months.The mature egg is black and big, the egg is floating along with the water, the young fish to the Yangtze river mouth fattening growth.

Status

The Chinese paddlefish is a first-level protected animal of the People's Republic of China. Due to overfishing, the Chinese paddlefish is critically endangered.The fish are rarely seen, recently raising concerns that the species might already be extinct. During a search conducted from 2006–2008 a research team from the Chinese Academy of Fisheries Science in Jingzhou failed to catch any paddlefish,but two probable specimens were recorded with hydroacoustic signals.

In recent years there have only been two confirmed sightings of the fish alive: One occurred on January 24, 2003, on the Yangtze.The second and most recent was a 3.6-metre (12 ft), 250-kilogram (550 lb) specimen captured by illegal fishing on January 8, 2007, in Jiayu County. Local villagers contacted officials who rushed to the site. Zeb Hogan of the TV-series Monster Fish on National Geographic Channel and other conservationists transferred the fish to a holding pen in hope that it would survive, but it died shortly afterwards due to unrecoverable injuries sustained while thrashing in the net.Many scientists now consider the Chinese paddlefish to be extinct.

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