How to Find the Difference Between Trout Species
Going back to my childhood days, I remember catching trout in the streams of Long Island. What kind of trout, you ask? I had no idea. All I knew was that someone told me they were trout, and in my eyes, that was good enough. I was eight years old after all. As it turned out, the trout I was catching were small brown trout.
Trout are among the most popular game fish in America. They can be caught in lakes, ponds, rivers, and small streams across the country. Whether it’s open water in the warmer months or through the ice in winter, trout fishing is a year-round activity. It’s hard to find a fisherman in the U.S. who hasn’t tried trout fishing at least once! For this article, we will focus on five trout that can be caught using a variety of methods, range from small to large, and live in either freshwater or saltwater environments.
Native vs. Stocked Trout
Trout can reproduce naturally in rivers and lakes through spawning; these are called native trout. However, to maintain an abundant supply for sport fishing, most states operate hatchery programs. Eggs are collected, hatched, and raised until the fish are large enough to be released into rivers and lakes, ensuring anglers always have opportunities to catch trout.
Habitat and Size
With the exception of Steelhead Trout and Sea Run Cutthroat Trout, all trout live in freshwater rivers and lakes. Trout size varies widely—from a few inches in small, cold streams to over 20 pounds in large lakes and rivers with abundant food.
Beauty of Trout
Trout are also some of the most beautiful freshwater fish in America, particularly during spawning. Rainbow trout spawn in spring, while species like Brown Trout and Lake Trout spawn in fall. During spawning, their colors become vibrant, making them a spectacular sight for anglers and nature enthusiasts alike.
Speckled Trout Identification (Spotted Seatrout)
Scientific Name: Cynoscion nebulosus
– Photo by Jacob Jones via iNaturalist.org
For years, anglers told me that the trout I caught in local lakes were speckled trout. It was not until my teenage years that I learned the truth: those fish were actually brown trout.
Speckled trout are not true trout at all. They are spotted seatrout and belong to a different family entirely. These fish primarily live in estuaries from Maryland to Florida and throughout the Gulf Coast. Speckled trout are always found in waters connected directly to saltwater, with no dam blocking their path.
How to Identify Speckled Trout
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Silver body with dark gray or green back and a white belly
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Distinct round black spots scattered across the body
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Large, sharp teeth located at the tip of the upper jaw
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Average size ranges from 15 to 25 inches and 2 to 4 pounds
Speckled Trout Taste
Despite the name, speckled trout are actually a saltwater species, also known as spotted seatrout. They are highly regarded as a food fish along the Gulf Coast and Atlantic estuaries. Speckled trout have mild, slightly sweet white meat that is tender and versatile. They are commonly prepared pan-fried, grilled, or blackened.
Brown Trout Identification
Scientific Name: Salmo trutta
– Photo by Kirk Gardner via iNaturalist.org
Growing up on Long Island, brown trout were the most common trout species unless you fished in a hatchery-supported area. Brown trout have been stocked in lakes and streams throughout the Northeast for decades.
They prefer water temperatures between 60 and 65 degrees Fahrenheit but are highly adaptable and can survive outside that range.
How to Identify Brown Trout
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Red to orange spots below the lateral line and black spots above
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Yellow to green body coloration
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Can grow extremely large, over 40 pounds, though most average under 2.5 pounds
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Large mouth relative to body size with zig-zag patterned upper teeth
Brown Trout Taste
Brown trout generally have a stronger and more pronounced flavor than rainbow trout. Wild brown trout from cold, fast-moving streams tend to have firmer meat and a deeper taste. Some anglers appreciate this richer flavor, while others prefer the milder profile of stocked or lake-dwelling trout.
Tiger Trout Identification
Scientific Name: Salmo trutta × Salvelinus fontinalis
– Photo by Wasatch Hunter via iNaturalist.org
Tiger trout are high on my bucket list. This hybrid trout is a cross between a female brook trout and a male brown trout. Although stocked in at least 12 U.S. states, they were not available in New York during my youth.
Tiger trout are easily recognized by their unique, wavy patterns that resemble a saltwater mackerel.
How to Identify Tiger Trout
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Greenish-yellow body with an orange belly
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Distinct maze-like markings along the sides
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Square-shaped tail fin
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Commonly weigh 2 to 5 pounds, with record fish exceeding 20 pounds
Rainbow Trout and Steelhead Identification
Scientific Name: Oncorhynchus mykiss
Rainbow trout and steelhead are genetically the same fish, with one major difference. Rainbow trout spend their entire lives in freshwater, while steelhead migrate to the ocean before returning to freshwater to spawn.
Steelhead tend to be more silvery and are often considered better table fare.
– Photo by LJBrion via iNaturalist.org
Rainbow Trout Identification
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Typical size ranges from 1 to 5 pounds in streams and rivers, and 4 to 8 pounds in large lakes
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Pink to reddish coloration along the sides
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Small black spots on the body and tail
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Blue-green to olive-colored back
Rainbow Trout Taste
Rainbow trout is one of the most popular trout species for eating due to its mild, clean flavor. The meat is light pink to white, tender, and flaky. Rainbow trout does not taste overly fishy, making it a great option for beginners or those who prefer a subtle flavor profile. It performs well when baked, pan-fried, or grilled.
Steelhead Trout Identification
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Average weight of 8 to 11 pounds, with some exceeding 40 pounds
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Silvery body with faint rainbow coloration
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White mouth and gum line
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Squared, slightly forked tail
– Photo by Gernot Kunz via iNaturalist.org
Steelhead Trout Taste
Steelhead trout are often compared to salmon, and for good reason. Because steelhead migrate between freshwater and saltwater, their flesh is richer and oilier than that of resident rainbow trout. Steelhead has a fuller flavor and firmer texture, making it ideal for grilling, smoking, or roasting. Many anglers consider steelhead one of the best-tasting trout available.
Which Trout Tastes the Best?
Taste is subjective, but many anglers rank steelhead and rainbow trout at the top due to their balance of flavor and texture. Brown trout appeals to those who enjoy a bolder taste, while speckled trout is favored in coastal regions for its mild sweetness and culinary versatility.
Trout FAQ
Why Trout Fishing Is Great for Kids and Beginners？
Trout fishing is an excellent way to introduce children and beginners to the sport. In states like New York, free fishing days allow families to fish stocked lakes and streams without a license.
These events often include guidance from park staff and local experts, helping children catch their first trout and spark a lifelong passion for fishing.
How can you tell the difference between trout species?
The easiest way to tell trout species apart is by examining their spot patterns, body coloration, tail shape, and habitat. For example, brown trout have red and black spots with light halos, while rainbow trout feature a pink or red stripe along their sides. Speckled trout, despite their name, are actually saltwater fish and have round black spots and sharp canine teeth.
Are speckled trout real trout?
No, speckled trout—also known as spotted seatrout—are not true trout. They belong to the drum family (Sciaenidae) and are saltwater fish commonly found in coastal estuaries and bays. True trout belong to the Salmonidae family and live primarily in freshwater or migrate between freshwater and saltwater, like steelhead.
What is the difference between rainbow trout and steelhead?
Rainbow trout and steelhead are the same species (Oncorhynchus mykiss). The key difference is their life cycle. Rainbow trout remain in freshwater their entire lives, while steelhead migrate to the ocean and return to freshwater to spawn. Steelhead are typically larger, more silvery in color, and stronger fighters.
What is the best way to catch trout for beginners?
For beginners, trout can be effectively caught using spin fishing with light tackle, live bait such as worms or minnows, or small artificial lures. Fly fishing is also very popular for trout, especially in streams and rivers. In larger lakes, trolling with deep-diving lures can target bigger trout.
Where are trout commonly found in the United States?
Trout are commonly found in cold, clean waters such as streams, rivers, lakes, and reservoirs across the United States. Brown, rainbow, and brook trout are widespread in the Northeast, Midwest, and Western states. Steelhead are found in the Great Lakes and along the Pacific Coast, while speckled trout inhabit coastal saltwater regions.
What is the difference between trout and salmon?
Trout and salmon are closely related fish species within the salmonid family, but they differ in habitat, life cycle, size, and flavor. Trout typically spend their entire lives in freshwater, such as streams, rivers, and lakes, while salmon are anadromous, meaning they hatch in freshwater, migrate to the ocean, and return to freshwater to spawn.
In terms of size, salmon generally grow much larger than most trout species. Flavor-wise, trout usually has a milder, more delicate taste, whereas salmon is richer and oilier due to its higher fat content from ocean feeding. Both are popular sport fish and excellent table fare.
Conclusion
Trout fishing offers something for anglers of all ages and skill levels. Learning to identify different trout species not only enhances your fishing knowledge but also deepens your appreciation for these incredible fish.
Until next time, tight lines and screaming drags.
About the Author:
Tom Melton is an outdoor writer and lifelong angler with over 40 years of fishing experience. In 1994, he served as Editor of The Fisherman Magazine on Long Island. He has written more than 5,000 fishing articles and columns and is the author of Fishing the Long Island Coast. Now based in Florida, Tom focuses on freshwater bass fishing as well as saltwater species, sharing practical techniques and gear insights for anglers of all levels.