To: Cogito Ergo Sum who wrote (163266 ) 6/7/2009 5:03:55 AM From: E. Charters Read Replies (1) | Respond to of 314173 There is a something a bit fishy about this thread these days. It appears we do have chain pickerel, or what we call pike, the esox genus, in Ontario. So apparently the 49th parallel is not a steel wall to certain fish species as I had previously thought. There is a European fish called the pikeperch, which closely resembles the walleye, or yellow pickerel, and is called the zander as well, here pictured below. Colouration and markings are somewhat different. Colouration of Walleye varies widely in the lower 48 apparently, also supposedly as the fish matures and in different clarity of waters. Most I have seen in Canada were distinctly brown green on top and yellow on the sides. In Quebec, their name Dore, also used in Ontario, means "golden". What in Canada we call a pickerel was given that name by commercial fishermen in Lake Erie, Lake Winnipeg and Western Ontario. They were extensively commercially ice fished on Lake Nipigon and Lake Winnipeg for more than a century under that name. The genus of perch was named sanders vitreus by a Doctor Mitchill from Cayuga New York in 1818. They have also been called in the states walleyed pike, glass-eyed pike, blue pike, yellow pike, salmon and jack salmon. Some Great Lakes wall-eye were blue in colour, (a species now extinct), hence the name blue pike. The name pikeperch may come from the latin name used in Europe for this species, "lucioperca" which means pikeperch. They do resemble European Perch there. The perch family has distinctively two dorsal fins, whereas the Pike only has one. There are also Sauger which are leaner, smaller headed, and don't taste as good as walleye. Otherwise they resemble them closely. The Lake Nipissing Walleye were always blue coloured until the lake was restocked in 1920. The genetic strain of the blue walleye has disappeared although the colouration still does turn up now and then. Ahmic Lake also has blue Walleye, but it is not known if it is a genetically different fish from standard walleye. Supposedly 25 million walleye are fished each year in Ontario. The phenomenon of a steel wall being formed by a boundary line on a map preventing crossing by natural phenomena, geographical features, or animal migration or habitat is also seen in claim staking where a gold deposit, hydrothermal conduit or mineral trend is cut off by a claim line. How this develops geologically is a subject of study currently. EC<:-}