"Due to their tolerance for varied temps Walleye and all Esox species are generally listed as warm water species . Trouts , Graylings,Whitefish and other Salmonoids are generally listed as cold water species . That's just the way they are classified . Hey you can catch Bass and Bluegills through the ice and they are still warmwater species!"
Uhh...nope. Maybe in Pennsylvania....they are listed as warm water...but they ain't. Additionally, 'tolerance' is not a criteria for classifying. Its the optimal temperature for growth that gets the nod. For that, pike are one of the ONLY species of fish that GROW in the winter. All others either maintain or lose during the winter months.
Additionally, catching fish through the ice don't make them cold classed....it makes them hungry (and see my above paragraph).
Regarding Esocidae in general....that is a wide range of species with equally wide range of species niche requirements. Muskie...are indeed warm water...though you'd be hard pressed to find many that could tell the difference between pike and muskie. Pickeral...true pickeral (not the incorrect name given to walleye)...and the various sub-species range for true cold (grass) to warm (chain and red-finned).
On all this...I'm just sayin' is all. Pike and walleyes...are cool-cold water indicator species.
"Water was 70F...in the sub-Arctic, those are warmwater species."
Guaranteed the WATER was not 70 degrees unless you are immediately in or downstream of a warmwater jet/volcanic infuence. Air temp is seldom to never water temp. 70 degree water...is lethal to absolutely ALL North American Fish; warm water through cold classed.
But, we are off topic. Sorry for the highjack.
King Joe Outa Here!