| Blue walleye | |
|---|---|
| |
Extinct (1983)
| |
Scientific classification  (invalid taxon) | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Percidae |
| Subfamily: | Luciopercinae |
| Genus: | Sander |
| Species: | |
| Subspecies: | †S. v. glaucus
|
| Trinomial name | |
| †Sander vitreus glaucus (Hubbs, 1926)
| |
| Synonyms | |
The blue walleye (Sander vitreus var. glaucus), also called the blue pike, was a unique color morph (formerly considered a subspecies) of walleye which was endemic to the Great Lakes of North America. Morphometric studies led biologists to classify the blue walleye as a separate species in 1926, although it was later downgraded to a subspecies. Listed as an endangered species by the United States in 1967, it was declared extinct in 1983.
Genetic analyses conducted in the 21st century show that the blue walleye was not genetically different from the yellow walleye (Sander vitreus), rendering the taxon invalid.