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That included the Milwaukee River, where it's likely no sturgeon spawning has taken place since 1843, when a dam was built across the river near North Avenue. ... typically from fish in the Wolf ...
The fish spawn in the shallows of the Wolf river, as they swim upstream. In order to protect the spawning locations of the sturgeon from poaching when the fish are the most vulnerable, the Wisconsin Department of Natural Resources formed a citizen sturgeon guard called Sturgeon For Tomorrow in the early 1990s. They volunteer to watch over the ...
Shortnose sturgeon spawn in moving freshwater water, over rubble or gravel bottoms. Time of spawning varies by latitude and is likely based on water temperatures in the range from 6.5–15 °C (43.7–59.0 °F); this may be as early as January in South Carolina or as late as May in Canada.
Lake sturgeon congregate in the shallows of the Wolf River on April 14 near Shiocton. The fish are gathering in the area to spawn. Wisconsin has among the highest populations of lake sturgeon
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.
And these aren't your average fish. Lake sturgeon can weigh up to 200 pounds and live to be 100 years old. They're listed as a threatened species in Michigan and sport fishing is closely regulated
In order for spawning to occur, water temperature should be above 17 °C (63 °F). Spawning normally lasts between nine and twenty-three days, but can continue past this as long as the water temperature remains below 22 °C (72 °F). [10] Free sturgeon embryos (the first interval of sturgeon after hatching) hide under rocks and do not migrate ...
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