There are several species of trout found around the world. Here are some of the most well-known ones:

Rainbow Trout (Oncorhynchus mykiss): Known for their distinctive pink stripe along their sides, rainbow trout are native to North America and have been introduced to many other parts of the world.
The largest of the Rainbow Trout Family is the Steelhead Trout. The Steelhead Trout is born in Freshwater and then spends time in the Ocean before returning to the stream where it was born to spawn. The Steelhead doesn’t die after spawning like it’s cousins the Salmon.

Brown Trout (Salmo trutta): Brown trout are native to Europe, but they have been introduced to many countries and are now found globally. They are known for their brown or olive coloration with black and red spots.

Brook Trout (Salvelinus fontinalis): Native to eastern North America, brook trout are known for their beautiful coloration, including red and white spots on a background of olive-green to brown. Brook Trout are members of the Char Family.

Cutthroat Trout (Oncorhynchus clarkii): There are several subspecies of cutthroat trout found in western North America, each with its unique characteristics. They are named for the distinctive red or orange slashes on the underside of their jaws.

Golden Trout (Oncorhynchus aguabonita): Found in high-elevation streams and lakes in the Sierra Nevada of California, golden trout are prized for their vibrant golden coloration.

Lake Trout (Salvelinus namaycush): Also known as Mackinaw, lake trout are found in cold, deep lakes of North America. They are known for their large size and can live for several decades. The Lake Trout is actually a member of the Char Family.

Bull Trout Salvelinus confluentus. Bull Trout are native to North America and are closely related to other trout species like Brook Trout and Lake Trout. They are typically found in cold, clear streams and lakes in the western United States and western Canada. Bull Trout are also members of the Char Family.

These are just a few examples, and there are other species and subspecies of trout found in different regions. Each species may also have multiple subspecies or regional variations.