Fish Facts

Fish Biology and Identification


Each fish species needs different habitats to carry out its life functions.  The habitat a species needs varies with its life stage. Typical life functions include feeding, resting, hiding from predators, and spawning.


Based on the water temperatures they need, fish species can be grouped into three broad fish communities: cold water, cool water and warm water. But please note that there is a certain amount of overlap among these broad community types. For example, during the summer when waters are at their warmest in Ontario, it is not uncommon to find some cold water species living in the same areas as cool water species, or cool water species living in the same areas with warm water species.



Warm Water Species

BluegillBowfin, Brown Bullhead, Carp, Channel Catfish, Goldeye, Largemouth Bass, Pumpkinseed, Smallmouth Bass, White Bass, White Perch


Cool Water Species

Black Crappie, Freshwater Drum, Mooneye, Muskellunge, Northern Pike, Rock Bass, Sauger, Walleye, White Crappie, White Sucker, Yellow Perch


Cold Water Species

Atlantic Salmon, Aurora Trout, Brook Trout, Brown Trout (Inland), Brown Trout (Great Lakes), Burbot, Chinook Salmon, Cisco (or Lake Herring), Coho Salmon, Lake Sturgeon, Lake Trout, Lake Whitefish, Pink Salmon, Rainbow Smelt, Rainbow Trout (Inland), Rainbow Trout (Great Lakes), Round WhitefishSplake