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It is the largest freshwater fish in the world. The beluga also rivals the great white shark (Carcharodon carcharias) and the greenland shark (Somniosus microcephalus) for the title of largest actively predatory fish. [10] [11] The largest accepted record is of a female taken in 1827 in the Volga estuary at 1,571 kg (3,463 lb) and 7.2 m (23 ft ...
The largest sturgeon on record was a beluga female captured in the Volga Delta in 1827, measuring 7.2 m (23 ft 7 in) long and weighing 1,571 kg (3,463 lb). Most sturgeons are anadromous bottom-feeders , migrating upstream to spawn but spending most of their lives feeding in river deltas and estuaries .
In 2012, the largest sturgeon ever caught on Lake Winnebago (a female) was 125 years old, weighed 240 lb., and measured 87.5 in. in length. It was tagged and released by scientists from the Wisconsin Department of Natural Resources. [28] The sturgeon is also present in Quebec in the St. Lawrence River, where it is targeted by commercial fisheries.
"Sturgeon don’t reach breeding maturity until they are about 20 years old, and about 6 feet long. They can live more than 100 years. Older female sturgeon can produce ten times the number of ...
The system features one of the largest lake sturgeon populations in the world. In its 2023 population assessment, the DNR estimated the system had 23,625 adult male and 18,061 adult female sturgeon.
The largest species is the beluga sturgeon (Huso huso) of the Caspian and Black seas, the only extant bony fish to rival the massiveness of the ocean sunfish. The largest specimen considered reliable (based on remains) was caught in the Volga estuary in 1827 and measured 7.3 m (24 ft) and weighed 1,474 kg (3,250 lb). [1]
When the female sturgeon reaches full maturity and is preparing to spawn, her eggs are harvested, treated with salt, and tinned. (“Harvesting” is a euphemism for killing the fish to extract ...
When ready to spawn, white sturgeon choose a variety of substrates dependent on the river system, spawning on gravel or rocky substrate in moderate to fast currents, with observed depths of 3–23 m (9.8–75.5 ft), and water velocities at the bottom on a range of 0.6-2.4 m/sec. [21] When eggs are released by the female, they are negatively ...