Alaska pollock is misnamed but feeds the world
Gadus chalcogrammus schools across the North Pacific, densest in the eastern Bering Sea. Trade still calls it pollock, yet genetics pushed it back into the cod genus Gadus. Roughly three million metric tons come ashore yearly—said to be the planet's second most important catch after Peruvian anchoveta.
In nineteen fifty-six the fish was parked in its own genus as Theragra chalcogramma. Two thousand eight research showed close kinship with Atlantic cod, so classification returned to Gadus; the U.S. Food and Drug Administration adopted that scientific name in twenty fourteen. Experts still argue that common labels Alaska, Pacific, or walleye pollock mislead buyers about its cod identity. Tiny Barents Sea populations once tagged Norway pollock (Theragra finnmarchica) appear genetically identical; only a handful of specimens are known, and Norway lists that form Near Threatened.
Speckled colouration helps the fish blend near sandy bottoms. It grows fast, lives briefly, and drums with specialised muscles during courtship like other gadids. Age shapes diet: juveniles under sixty millimetres lean on copepods, while larger young add krill, so food shortages hit the smallest hardest. Stormy summers can boost catches three years later, a lag that ties weather to recruitment in the Bering Sea food web.
United States landings dominate any single fish species there: eastern Bering Sea averages about one point twenty-six million metric tons a year from nineteen seventy-nine to twenty twenty-two, with national totals near one point three million tons, roughly ninety-two percent from the Bering Sea. Marine Stewardship Council certifications for Gulf of Alaska and Bering Sea/Aleutian fisheries arrived in two thousand five and have been renewed since. The MSC's twenty twenty-one Ocean Champion Award recognised industry groups for supply-chain transparency. Abundance plus management make this modest schooling fish a quiet pillar of global protein.
Source: Alaska pollock
