Russian sturgeon
Russian sturgeon | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Acipenseriformes |
Family: | Acipenseridae |
Genus: | Acipenser |
Species: | A. gueldenstaedtii
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Binomial name | |
Acipenser gueldenstaedtii von Brandt & Ratzeburg 1833
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Synonyms[3][4] | |
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The Russian sturgeon (Acipenser gueldenstaedtii), also known as the diamond sturgeon or Danube sturgeon, is a species of
Description
The Russian sturgeon can grow to 210 cm (83 in) but a more normal size is 110 to 140 cm (43 to 55 in). It has a relatively short and rounded snout with three pairs of unfringed barbels closer to the tip of the snout that to the mouth. The dorsal fin has 27 to 48 soft rays and the anal fin has 16 to 35. The number of scales along the lateral line varies from 21 to 50. This fish can be distinguish from the otherwise similar starry sturgeon by the shape of its snout, its barbels and scale arrangement. The upper surface is greyish-green, the lateral scales are pale and the belly white.[5][6]
Distribution and habitat
The Russian sturgeon is native to the
Biology
The Russian sturgeon feeds on crustaceans, molluscs and small fishes such as gobies, anchovies and sprats. It is solitary when in the sea but becomes gregarious as it moves up-river in April, May and June to spawn.[6]
Hybrid
In a paper published in July 2020, eggs from three Russian sturgeons were crossbred with American paddlefish using sperm from four male paddlefishes, resulting in successful hybrids called sturddlefish. The resulting offspring had a survival rate of 62% to 74% and on average reached 1 kg (2.2 lb) after a year of growth. This is the first time such fish from different genera and families successfully were crossbred.[7]
See also
Sources
- . Retrieved 14 November 2021.
- ^ "Appendices | CITES". cites.org. Retrieved 14 January 2022.
- ^ Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Retrieved 18 May 2017.
- ^ "Acipenseridae" (PDF). Deeplyfish- fishes of the world. Retrieved 18 May 2017.
- ^ "Russian sturgeon: Acipenser gueldenstaedti (Brandt)". NatureGate. Retrieved 25 December 2013.
- ^ a b c "Danube sturgeon (Acipenser gueldenstaedti)". Fishes of the NE Atlantic and the Mediterranean. Marine Species Identification Portal. Archived from the original on 24 June 2017. Retrieved 25 December 2013.
- PMID 32640744.
- Froese, Rainer; Pauly, Daniel (eds.) (2011). "Acipenser gueldenstaedtii" in FishBase. June 2011 version.