Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist .
4-484: Saccobranchus Valenciennes , 1840 Clarisilurus Fowler, 1937 Heteropneustes is a genus of catfishes , the airsac catfishes , native to Asia . This genus is monotypic in the family Heteropneustidae . Their bodies are elongated and compressed with greatly depressed heads. They have long air sacs that serve as lungs that extend from the gill chamber. Their dorsal fins are short and have no spine. Their pectoral fins have an associated venom gland, so
8-606: The Muséum national d'histoire naturelle . Early in his career, he was given the task of classifying animals described by Alexander von Humboldt (1769–1859) during his travels in the American tropics (1799 to 1803), and a lasting friendship was established between the two men. He is the binomial authority for many species of fish, such as the bartail jawfish . Working in the scientific field of herpetology , Valenciennes described two new species of reptiles . The organ of Valenciennes ,
12-619: The fish are considered dangerous. They are oviparous ; distinct pairing is possible. Up to six species in this genus are recognized: FishBase does not list H. fuscus while the Catalog of Fishes considers H. microps a synonym of H. fossilis . This catfish -related article is a stub . You can help Misplaced Pages by expanding it . Achille Valenciennes Valenciennes was born in Paris , and studied under Georges Cuvier . His study of parasitic worms in humans made an important contribution to
16-435: The study of parasitology . He also carried out diverse systematic classifications, linking fossil and current species . He worked with Cuvier on the 22-volume " Histoire Naturelle des Poissons " (Natural History of Fish) (1828–1848), carrying on alone after Cuvier died in 1832. In 1832, he succeeded Henri Marie Ducrotay de Blainville (1777–1850) as chair of Histoire naturelle des mollusques, des vers et des zoophytes at
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