Good call from Dwight on northern pike. They truly are a coolwater fish species. In South Dakota, they grew in length over winter and in spring/fall but did NOT grow in the summer when it got too warm.
Neumann, R.M., D.W. Willis, and S.M. Sammons. 1994. Seasonal growth of northern pike in a South Dakota glacial lake. Journal of Freshwater Ecology 9:191-196.
You can't get that journal online. So, if anyone "needs"
a copy, send me an email and I'll get it to you. It's also available on our department web page publication list.
http://wfs.sdstate.edu/wfsdept/Department%20of%20Wildlife%20and%20Fisheries%20Publications.htm Oh, and one other tidbit. Rob Neumann is now the managing editor for In-Fisherman magazine. Cool, eh?