Bryan McAllister’s personal reference notebook
July 30, 2026Short & citedBlog
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Field Notes • Fish

Trout

Trout are a common name for several species of freshwater and sometimes sea-migrating fishes in the salmon family, Salmonidae.

Updated July 30, 20261 min readCited sources

Trout is a common name for several species of freshwater and sometimes sea-migrating fish in the salmon family, Salmonidae. They are closely related to salmon and widely valued as sport and food fish.

What it is

Trout are salmonid fishes in the order Salmoniformes. The common name covers species in multiple genera, including Salmo, Oncorhynchus, and Salvelinus. Well-known types include brown trout, rainbow trout, brook trout, lake trout, and cutthroat trout.

Habitat and life cycle

Most trout live in cool, clear freshwater such as streams, rivers, and lakes. Some species are anadromous, meaning they migrate to the sea between spawnings and return to freshwater to reproduce.

Why it matters

Trout are among the most popular game fish and are widely eaten. They are commonly raised in hatcheries and stocked in suitable waters. In Canada, species like lake trout are native to the Great Lakes region and northern lakes, supporting both sport and food fisheries.

In short

  • Trout are salmonid fish, closely related to salmon.
  • Most live in cool freshwater; some migrate to the sea.
  • They are important for sport fishing and food.
  • In Canada, lake trout are native to the Great Lakes and northern waters.
Canadian angle

Trout are important in Canada as both sport and food fish, and species such as lake trout are native to Canadian waters, including the Great Lakes region and northern lakes.

Quick questions

What is a trout?
A common name for several salmonid fish species, usually in the family Salmonidae.
Are trout the same as salmon?
No. They are closely related but not the same group.
Where do trout live?
Most live in cool freshwater habitats like streams, rivers, and lakes.

Sources

  1. Britannicahttps://www.britannica.com/animal/trout
    Supports: Trout are salmonid fishes, usually freshwater, sometimes sea-migrating, and important sport and hatchery fish.
  2. Britannica Kidshttps://kids.britannica.com/students/article/trout/277433
    Supports: Trout habitat, popularity as sport and food fish, and examples of major trout groups.
  3. Merriam-Websterhttps://www.merriam-webster.com/dictionary/trout
    Supports: Trout as salmonid food and sport fishes, mostly smaller than typical salmons, living in cool clear freshwater or anadromous.
  4. Britannicahttps://www.britannica.com/animal/lake-trout
    Supports: Lake trout distribution in northern Canada, Alaska, the Great Lakes basin, and its association with Canadian waters.