Blue walleye
Extinct colour variant of the walleye from the Great Lakes
The blue walleye was a steel-blue form of walleye found in Lakes Erie and Ontario. Once treated as a distinct species or subspecies, it collapsed under fishing pressure and was declared extinct in 1983. Modern genetics show it was not different from the common yellow walleye.
- Declared extinct in 1983 after fishery collapse
- Genetic tests show no difference from yellow walleye
- Commercial catches fell from millions to pounds in years
- Endemic to Lakes Erie and Ontario in North America
- Had steel-blue colour and larger eyes than relatives
What it is
This fish was a unique colour form of the walleye, often called the blue pike. It displayed a steel-blue hue and possessed larger eyes set higher on the head than its yellow relatives. The distance between its eyes was also smaller. It lived alongside the standard yellow walleye but preferred deeper, cooler zones in its native lakes. Biologists once classified it as a separate species due to these physical traits.
Where it lives
The population was endemic to the Great Lakes of North America, specifically Lakes Erie and Ontario. It also appeared in the Ohio River drainage. While it favoured the cold, deep sections of Lake Erie, records show it inhabited shallow and warmer areas too. Occasional grey-blue or steel-blue walleye are still caught in these waters, though they are likely just colour variants of the common species.
How it lives
It co-occurred with the yellow walleye in shared habitats. The fish occupied similar ecological niches but showed a preference for cooler depths. Predators and specific dietary habits are not detailed in the available records. Its behaviour mirrored that of the standard walleye, with which it shared the same waters. The existence of a turquoise-coloured walleye in the Canadian Shield suggests similar colour variations occur elsewhere.
Breeding and life cycle
Consequently, information on how this particular form bred remains absent from the record.
Fish and people
This fish supported a major commercial fishery in the mid-twentieth century. Annual catches in the United States and Canada ranged from two million to twenty-six million pounds between 1950 and 1957. The harvest crashed to just 79,000 pounds by 1959 and fell to 200 pounds by 1964. It was listed as endangered in 1967 and declared extinct in 1983 due to this rapid collapse.
Status and threats
The United States government listed the blue walleye as an endangered species in 1967. By 1983, it was officially declared extinct. The primary driver was a sudden collapse in population during the 1950s, linked to heavy commercial fishing. Recent genetic studies suggest the taxon was invalid, meaning the distinct blue form may have been a rare colour morph rather than a unique biological entity.
Questions people ask about Blue walleye
Is the blue walleye a real species?
Modern genetic studies show it was not genetically distinct from the common yellow walleye. It is now considered an invalid taxon, likely a colour morph rather than a separate species or subspecies.
Why did the blue walleye go extinct?
Its population collapsed rapidly in the 1950s due to intense commercial fishing. Catches dropped from millions of pounds to mere hundreds, leading to its listing as endangered and eventual declaration of extinction.
Where did the blue walleye live?
It was endemic to the Great Lakes, primarily inhabiting Lakes Erie and Ontario. It was also found in the Ohio River drainage, preferring deeper and cooler waters but appearing in shallow areas too.
Good reading and sources
The facts on this page come from the Wikipedia article "Blue walleye", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.
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