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They also play an important role in the greater ecosystem by serving as a food source for birds of prey, mammals, and larger fish in certain environments. Trout tend to be apex predators in their natural stream environments, feeding on fish, insects, and crustaceans. This can make explaining different species a much more complex topic than one would expect. Many common trout species are subspecies of a larger group or can interbreed with other trout strains. North America hosts the most trout species in the world, but many were introduced from other regions.Īnother important thing to keep in mind is that trout are very closely related, despite being differentiated by taxonomy or by name. One big thing to remember about trout is that they tend to be very adaptable and tend to have high survival rates when brought into new environments. Some fish like the saltwater speckled trout aren’t trout at all and are instead part of the drum family. True trout are closely related to salmon and char species, occasionally being mistaken for one of these fish. mWe’ll go more in-depth on the confusion around the name trout further on in the article. Rather, it’s typically used to refer to salmon-shaped fish, usually, those that are in freshwater environments. The confusion with the term trout really comes into play because the word “trout” isn’t a scientific classification.

The term trout is also used to refer to some fish outside of the salmonid family that occurs in saltwater. Trout are fish that belong to a few specific scientific genera and families, including Oncorhynchus, Salmo, Salvelinus, Salmoninae, and Salmonidae. We’ll be discussing the 12 trout species you should know about, explaining what a trout even is, and talking about the major impact on ecosystems trout have had around the world. Salmon, char, and true trout are all very similar genetically, so similar in fact that many fish we consider trout aren’t trout at all. Whether you’re out at sea, floating down a river, or cruising around a lake, there’s probably a non-native trout species in the water. They happen to be incredibly fun to catch, taste great, and can adapt to survive in a wide array of habitats. Trout is one of the most sought-after freshwater fish in the world.