Blue Walleye

This is an image of a Yellow Walleye and a Blue Walleye I found on the web so you can see the difference. They say they are extinct but I think they are very rare now in the U.S. I also think they are sometimes caught in Canada. I have done some research and have seen pictures of guys with Blue Walleye caught up in Canada. The blue walleye, previously erroneously called the blue pike, was a subspecies of the walleye that went extinct in the 1960s. Until the middle of the 20th century, it was a commercially valuable fish with about a half million tonnes being landed during the period from about 1880 to the late 1950s, when the populations collapsed.

The fish was endemic to lakes Erie and Ontario of the Great Lakes region of North America, including the inter-connecting Niagara River, but most especially to Lake Erie where it sometimes represented more than 50% of the commercial catch. The subspecies was apparently extirpated by about 1965 through a combination of anthropogenic eutrophication, over fishing and competition with the introduced rainbow smelt, Osmerus mordax. The subspecies is now considered extinct.

There are occasional reports of blue walleye being caught from waters in the Great Lakes Basin. This is because many yellow walleye populations also contain a color variant with a bluish color. The actual blue walleye, however, was said to be distinguishable from the yellow walleye by various meristics and morphometrics which the blue color variant of the yellow walleye seems not to share. Reportedly, though, some of the meristic and morphometric differences may simply have been artifacts of the different growth rates of yellow and blue walleyes. The clearest evidence, however, is that the blue walleye, whatever its taxonomic status, has been lost. Nonetheless, an investigation of genetic material from preserved blue walleye specimens is currently underway in several research facilities in an effort to decipher the true status of the populations.

To date, none of the bluish-colored walleyes recently captured has been shown to be a blue walleye, despite the fact that at least one organization in the US is offering a reward for the successful capture of a blue walleye specimen. A United States Fish and Wildlife Service recovery plan in the mid-1970s was unable to find any certain evidence of the blue walleye's existence at that time. Nine purported blue walleyes captured in 1975, including a number of gravid females, were inconclusive as to their sub specific designation and failed to produce any viable offspring through artificial propagation. The last known blue walleyes, to any degree of certainty, were captured in about 1965 from both lakes Erie and Ontario. Subsequent exhaustive efforts to find a relict population have been entirely unsuccessful. The loss of the blue walleye is, arguably, an extinction event on par with the loss of the passenger pigeon and the near-extirpation of the American bison. Where once the subspecies numbered in the millions, all are now gone.