Pink Salmon
Pink Salmon - (Oncorhynchus gorbuscha)
Identification tips for trouts and salmons
Length: 14 to 18 inches
Weight: 12 ounces to 1.5 pounds
Coloring: dull steel-blue to blue-green on back, silver on sides, white underneath
Common Names: pink, humpback, saumon rose (French)
Found in Lakes: Superior (rare in Michigan)
In 1956, about 21,000 pink salmon were introduced -- some say inadvertantly
-- to a Thunder Bay tributary in northwestern Lake Superior. Over the
course of a few generations of stunted adults, the number of "pinks"
that have descended from the originals imported from the Pacific Coast
has grown larger. Populations of pink salmon are now thinly dispersed
throughout all Great Lakes.
For several years, pink salmon spawned every other year in Superior's
streams. This is because pink salmon almost always spawn and die in the
fall of their second year of life. However, because Lake Superior's nutrient-lean
waters have slowed their growth, some pink salmon have taken three years
to mature. As a result, there are now spawning runs every year in some
Lake Superior tributaries.
Prior to spawning, the males develop a pronounced hump in front of their dorsal fin. For this reason the species is often called the humpback. Though spawning pink salmon seldom feed, some will strike at live bait in the early stages of this transformation.
In their native Pacific Ocean, pink salmon have grown in commercial value and are now canned and sold widely. The discovery in recent years that they will also take bait from a trolled hook and line has also made them a desirable sport fish in British Columbia waters and in Great Lakes waters as well. Care must be taken, however, to ice down the fish after capture because its flesh deteriorates rapidly.
copyright 2001 University of Wisconsin Sea Grant Institute
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