2023-10-17 10:05:54
A fisherman in Heilongjiang Province on the mainland recently caught a strange “strange fish”. (Picture/reproduced from Weibo)
Recently, a fisherman in Heilongjiang Province on the mainland caught a strange “strange fish”. Not only was it huge in size, but it also weighed close to 1,000 kilograms and almost burst the fishing net. It is reported that this giant fish is called “Dashi” and is mainly distributed in the middle and lower reaches of the Heilongjiang River in Northeast Asia, as well as in the Ussuri River, the lower reaches of the Songhua River, and the lower reaches of the Nen River. Its maximum body length can reach 5.6 meters, and its weight At 1 ton, it is one of the largest freshwater fishes in existence.
It is understood that Daphne’s catfish, commonly known as catfish, catfish, East Asian catfish, sturgeon catfish, sturgeon catfish, etc., is a large benthic freshwater fish belonging to the family Acipensidae and the genus Catfish. It is distributed in the middle and lower reaches of the Heilongjiang River system in Northeast Asia. As well as the lower reaches of the Wusuli River, the lower reaches of the Songhua River, the lower reaches of the Nen River, etc., they mostly inhabit the gravel and sandy bottom. The maximum body length can reach 5.6 meters and the weight can reach 1 ton. It is one of the largest freshwater fishes in existence. It has a ferocious temperament and preys on other fish. It eats a lot and will bite its own kind when hungry.
The body of the Daphne’s catfish is thick at the front and tapers toward the back. The body is yellowish-brown, with a grayish-green tint, and the sides of the body are slightly lighter in color; the ventral surface is white, with a slight light yellowish-green color. There are no scales, and there are five rows of rhombus-shaped bone plates (hard scales) on the back and sides of the body, which are typical characteristics of cartilaginous fish. The mouth is larger, growing on the bottom of the head, and is slightly half-moon shaped. The snout is pointed and triangular in shape, with two pairs of tentacles on the bottom, the middle pair facing forward. There are two types: long kiss and short kiss.
The lifespan of the Dachshund’s catfish is very long, up to 100 years old. Sexual maturity is late, with males over 12 years old and females 16-17 years old. The number of eggs usually ranges from 250,000 to 4 million, with an average of 1 million. The eggs can be made into precious caviar, which is regarded as a delicacy in European countries and even the world. Although the number of eggs carried by the catfish is large, the mortality rate in the juvenile stage is high and the population recruitment is low. It is also heavily fished by humans due to the caviar industry. The wild population is on the verge of extinction and has been assessed by the International Union for Conservation of Nature (IUCN). A critically endangered species.
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