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Endangered and Threatened Species DPS and ESU U.S. range for Steelhead and Salmon. The National Oceanic and Atmospheric Administration, in cooperation with the U.S. Fish and Wildlife Service and Environmental Protection Agency, groups steelhead and salmon into distinct population segments (DPS).
Steelhead in 1924 illustration using the original taxonomic name, Salmo gairdneri The freshwater form of the steelhead is the rainbow trout (Oncorhynchus mykiss).The difference between these forms of the species is that steelhead migrate to the ocean and return to freshwater tributaries to spawn, whereas non-anadromous rainbow trout do not leave freshwater.
As of 2008, 750 steelhead were counted in the same area. With the exception of a few juvenile coho observed in Peters Creek in 1999, salmon have been absent from the watershed until a 2003 release of 17,000 hatchery-raised coho smolts in Pescadero Creek. Very few of these coho have returned to the creek. [5]
All of the state frequently experiences temperatures above 100 °F (38 °C), or below 0 °F (−18 °C) (though subzero temperatures are rare in southeastern Oklahoma), [20] and snowfall ranges from an average of less than 4 inches (10 cm) in the far south to just over 20 inches (51 cm) on the border of Colorado in the panhandle. [8]
The rainbow trout (Oncorhynchus mykiss) is a species of trout native to cold-water tributaries of the Pacific Ocean in North America and Asia. The steelhead (sometimes called steelhead trout) is an anadromous (sea-run) form of the coastal rainbow trout (O. m. irideus) or Columbia River redband trout (O. m. gairdneri) that usually returns to freshwater to spawn after living two to three years ...
The Entiat River supports populations of Chinook salmon, steelhead trout, bull trout and Lamprey. The populations are relatively small due to the scarcity of juvenile-rearing habitat in the lower Entiat River, However, due to the Entiat National Fish Hatchery (USFWS) there is a robust Summer Chinook fishery.
There are over 177 species of fish in the US state of Oklahoma, at least 7% of which are not native. [1] Species include: Alabama shad (Alosa alabamae) Alligator gar (Atractosteus spatula) American eel (Anguilla rostrata) American gizzard shad (Dorosoma cepedianum) American paddlefish (Polyodon spathula) Arkansas darter (Etheostoma cragini)
Chinook salmon are known to range as far north as the Mackenzie River and Kugluktuk in the central Canadian arctic, [46] and as far south as the Central Californian Coast. [47] Chum salmon (Oncorhynchus keta) is known as dog salmon or calico salmon in some parts of the US, and as keta in the Russian Far East.