Friday, May 1, 2020

Fish Pick Friday - Walleye

 The fish of the week is the Walleye:
The walleye (Sander vitreus, synonym Stizostedion vitreum), also called the yellow pike, is a freshwater perciform fish native to most of Canada and to the Northern United States. It is a North American close relative of the European zander, also known as the pikeperch. The walleye is sometimes called the yellow walleye to distinguish it from the blue walleye, which is a subspecies that was once found in the southern Ontario and Quebec regions, but is now presumed extinct.

I need to know who this woman is
she catches a lot of freshwater fish.
Walleyes show a fair amount of variation across watersheds. In general, fish within a watershed are quite similar and are genetically distinct from those of nearby watersheds. The species has been artificially propagated for over a century and has been planted on top of existing populations or introduced into waters naturally devoid of the species, sometimes reducing the overall genetic distinctiveness of populations.

The common name, "walleye", comes from the fact that the fish's eyes point outward, as if looking at the walls. This externally facing orientation of the eyes gives anglers an advantage in the dark because a certain eyeshine is given off by the eye of the walleye in the dark, similar to that of lions and other nocturnal animals. This "eyeshine" is the result of a light-gathering layer in the eyes called the tapetum lucidum, which allows the fish to see well in low-light conditions. In fact, many anglers look for walleyes at night since this is when major feeding efforts occur. The fish's eyes also allow them to see well in turbid waters (stained or rough, breaking waters), which gives them an advantage over their prey. Thus, walleye anglers commonly look for locations where a good "walleye chop" (i.e., rough water) occurs. This excellent vision also allows the fish to populate the deeper regions in a lake, and they can often be found in deeper water, particularly during the warmest part of the summer and at night.
Walleyes are commonly found in northern waters, and often caught in cooler waters, hence the relative dearth of good bikini pictures.

Decent, fishable populations of Walleye are found in upper tidal portions of Chesapeake in the Potomac and Susquehanna Rivers. I have not done any fishing for Walleyes in these places, but Susky Dave is a regular Walleye master in the Susquehanna below the dam. I have caught Walleyes on a trip to Canada.

Linked at Proof Positive in the weekly Best of the Web* and at The Right Way in the weekly Rule 5 Saturday LinkOrama.


















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