Beluga (sturgeon)
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The beluga, also known as the beluga sturgeon or great sturgeon, is a species of sturgeon, which are anadromous fish of the family Acipenseridae of the order Acipenseriformes. It is found primarily in
Білуга
Comparison between an adult (above) and a juvenile (below) Huso huso
A 1000-kg, 4.17-m-long beluga fish from the Volga River (National Museum of Tatarstan, Kazan, Russia)
Fingerling of Huso huso eating a small fish in an aquarium
Isinglass
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Isinglass is a form of collagen obtained from the dried swim bladders of fish. The English word origin is from the obsolete Dutch huizenblaas – huizen is a kind of sturgeon, and blaas is a bladder, or
Beluga (sturgeon)
…endangered status has made its caviar even more expensive throughout the world. The beluga's air bladder was used to make what was considered the best isinglass. While currently mostly substituted by cheaper alternatives such as cod isinglass, its use was still investigated as of the 21st century. IUCN classifies…
Isinglass
Swim bladder of a rudd (Scardinius erythrophthalmus)
Adding finings to a cask of beer