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American paddlefish are among the largest and longest-lived freshwater fishes in North America. [26] They have a shark-like body, average 1.5 m (4.9 ft) in length, weigh 27 kg (60 lb), and can live in excess of thirty years. [27] For most populations the median age is five to eight years and the maximum age is fourteen to eighteen years. [26]
American paddlefish commonly reach 5 ft (1.5 m) or more in length and can weigh more than 60 lb (27 kg). The largest American paddlefish on record was caught in 1916 in Okoboji Lake, Iowa. [17] The fish was taken with a spear, and measured 7 ft 1 in (2.16 m) long and 45.5 in (1.16 m) in the girth. [17]
The sturddlefish is a hybrid of the American paddlefish (Polyodon spathula) and the Russian sturgeon (Acipenser gueldenstaedtii), accidentally created by researchers in 2019 and announced in 2020. [2] Obtaining living hybrids through breeding individuals from different families is unusual, especially given that the two species' last common ...
Acipenseriformes / æsɪˈpɛnsərɪfɔːrmiːz / is an order of basal [1] ray-finned fishes that includes living and fossil sturgeons and paddlefishes (Acipenseroidei), as well as the extinct families Chondrosteidae and Peipiaosteidae. [2][3][4] They are the second earliest diverging group of living ray-finned fish after the bichirs.
Sturgeon. Sturgeon (from Old English styrġa ultimately from Proto-Indo-European * str̥ (Hx)yón - [1]) is the common name for the 28 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous, and are descended from other, earlier acipenseriform fish, which date back to the Early Jurassic ...
The Chinese paddlefish (Psephurus gladius; simplified Chinese: 白鲟; traditional Chinese: 白鱘; pinyin: báixún: literal translation: "white sturgeon "), also known as the Chinese swordfish, is an extinct species of fish that was formerly native to the Yangtze and Yellow River basins in China. With records of specimens over three metres ...
Slender, with a huge spine, these fish can reach 2.1 m (6.9 ft) long and can weigh up to 11 kg (24 lb). [81] Toadfish (Batrachoidiformes) The largest toadfish, the Pacuma toadfish The largest toadfish is the Pacuma toadfish (Batrachoides surinamensis), reaching a size of up to 5 pounds (2.3 kg) and 23 inches (58 cm). [82]
A 7.6 foot long white sturgeon caught in 1998. A. transmontanus is distinguished by the two rows of four to eight ganoid bony plates between the anus and anal fin, with about 45 rays present in the dorsal fin. Coloring can range from gray to brownish on the dorsal side, paler on the ventral side, and gray fins.