Is the temperature of a lake related to the growth of its inhabitants?

[binzing]

Danger, the larger of the two pike I caught was about 9 or ten pounds. Pike are long and greenish with a large, almost shovel-like lower jaw. Both of these were about 20 to 24 inches in length.

 

[Danger]

Come to Maine and fish the middle reaches of the Kennebec River for Rainbow trout.

Turbo, I live on the north bank of the Bow River. You can't take a piss off of the bridge without getting something in a trout's eye. I don't fish any more, though, and never did river-fish. I would gladly take you up on the offer, though, but for that minor detail of not being allowed in your country.
Binzing, the things that I was catching were most assuredly pike. Environmental conditions might limit their growth where I was (Clayton Lake in the Ottawa valley), but anything over a foot long was either a pickeral or a walleye. Pike just never got that big.
The perch were home-bound (although I did catch one in Clayton Lake by accident). I lived on the south shore of Lake Erie. Throw your line in and reel it back up. There'd be either a perch or a rock bass stuck to it by the time it cleared the water.

 

[binzing]

Hmm, maybe the lake temperature and food supply affected their growth. The local river here (I live within a 5 minute walk from some good holes) the San Juan, is famous for its fishing, especially flyfishing. The term "San Juan Shuffle" was even coined here for the action of purposefully stomping around while wading, and then having trout swim really close, if not between your legs.

 

[Danger]

Hmm, maybe the lake temperature and food supply affected their growth.

I suspect that to be the case. Even on the hottest days of summer, that lake was way too cold to swim in.