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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 ...
The success came with a drawback. Bringing adult sturgeon to spawn in a hatchery meant they were drawing genetics from only a few members of the population. Releasing their offspring back into the ...
The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, [7] is a North American temperate freshwater fish, one of about 25 species of sturgeon.Like other sturgeons, this species is a bottom feeder and has a partly cartilaginous skeleton, an overall streamlined shape, and skin bearing rows of bony plates on the sides and back.
Comparison between an adult (above) and a juvenile (below) Huso huso. Huso huso shows typical characteristics of other sturgeon, such as an elongated body, heterocercal tail, partially cartilaginous skeleton, naked skin and longitudinal series of scutes. The dorsal fin has 48 to 81 soft rays, and the anal fin, much shorter, has 22 to 41 soft rays.
A large percentage of adult sturgeon will be concentrated in a small spawning area along the rocky riverbanks where they are almost oblivious to nearby human activity making them susceptible to ...
While selling a wild white sturgeon and eggs is illegal in California, it is legal to buy legal caviar from California White sturgeon farms. [ 24 ] [ 25 ] Poaching is an ongoing issue, in which caviar can sell on the black market for 100–150 dollars a pound, while a consumer buying legally made caviar from California sturgeon farms pays ...
The scutes also tend to be sharper and more pointed than in white sturgeon. The dorsal fin has 33–36 rays, the anal fin, 22–28. Green sturgeon has a smaller adult size than the white sturgeon. [6] Green sturgeon can reach 210 cm (7 feet) in length and weigh up to 160 kg (350 pounds). [7]
The primary foods of sturgeon while in freshwater areas include soft-bodied annelids, arthropods, aquatic insects, and globular mollusks. Adults that have emigrated from estuaries and into the sea will usually feed on epibenthic and hyperbenthic amphipods, grass shrimp, isopods, and worms. Most adult sturgeon will also feed on detritus and ...