paddlefish
Also known as Polyodontidae, veslonosovití, paddlefishes, shovelfish, shovelfishes
Paddlefish are members of the ray-finned fish family Polyodontidae, which belong to the basal order Acipenseriformes, one of two living groups within this order alongside sturgeons (Acipenseridae). Their most distinctive feature is an elongated rostrum that enhances electroreception, allowing them to detect prey in murky water. Both recent and fossil paddlefish occur exclusively in North America and Eastern Asia.
Species
paddlefishes
Family
- PhylumChordata
- ClassChondrostei
- OrderAcipenseriformes
- FamilyPolyodontidae
Habitatfreshwater
Les Polyodontidae (Polyodontidés en français) forment une famille de deux genres monotypiques de poissons dulçaquicoles appelés poissons-spatule ou polydons[1]. L'espèce Polyodon spathula est résidente du Mississippi et l'espèce Psephurus gladius du Yangtsé. Cette dernière est déclarée disparue en 2020, après dix ans d'absence dans les eaux de Chine[2]. Sommaire 1 Liste des genres et espèces 2 Voir aussi 2.1 Liens externes 3 Notes Liste des genres et espèces Selon FishBase : Genre Polyodon : Polyodon spathula (Walbaum, 1792) Genre Psephurus : Psephurus gladius (Martens, 1862) - espèce considérée éteinte en janvier 2020. Plusieurs genres connus sont éteints Crossopholis, Paleopsephurus, Protopsephurus. Voir aussi
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Article
14 sectionsContents
- Morphology
- Size
- Rostrum and electroreception
- Feeding strategies
- Distribution and habitat
- American paddlefish
- Chinese paddlefish
- Life cycle
- Aquaculture
- Classification and evolution
- Evolution
- Notes
- References
- External links
Paddlefish are members of the ray-finned fish family Polyodontidae, which belong to the basal order Acipenseriformes, one of two living groups within this order alongside sturgeons (Acipenseridae). Their most distinctive feature is an elongated rostrum that enhances electroreception, allowing them to detect prey in murky water. Both recent and fossil paddlefish occur exclusively in North America and Eastern Asia.
Eight species are known, six of which are prehistoric and only known from fossils—five from North America and one from China. Of the two species to have survived until modern times, the American paddlefish (Polyodon spathula) inhabits the Mississippi River basin in the United States, while the now extinct Chinese paddlefish (Psephurus gladius, also known as the "Chinese swordfish") inhabited the Yangtze and Yellow River basins in China. The earliest known paddlefish fossil, Protopsephurus, dates to approximately 120 million years ago during the Early Cretaceous epoch in China.