Trout vs Bass – What’s The Difference? Let’s Compare

There are many different types of freshwater trout and bass, some of them in the same waters. For this reason many people wonder about their differences. Therefore, what is the difference between trout and bass?

Freshwater trout and bass are different species. Bass are from the Centrarchidae family and trout are from the Salmonidae family. Freshwater bass grow longer than trout and weigh between 10-20 pounds while trout weigh 2-6 pounds. Largemouth bass and brown trout taste stronger and fishier than smaller trout and bass.

This article will do a side-by-side comparison of their tastes, textures, nutrients, costs, cooking methods, mercury levels and whether one can substitute for the other in recipes. In addition, I’ll compare their habitats, size, weight and how to tell them apart.

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Disclaimer: The above link and others in this article are affiliate links which means I may earn a small commission at no extra cost to you. As an Amazon associate I earn from qualifying purchases.

Trout vs Bass: Habitats, Size, Weight and Appearance

Bass is a name shared by many different species of fish. The more common freshwater bass are found in similar areas and waters as freshwater trout. Those bass include spotted, smallmouth and largemouth bass.

Trout, like bass, is a name shared by many different fish. The more common freshwater trout are found in similar areas as freshwater bass. The more common freshwater trout are brown and brook trout.

For this reason, this article will discuss the more common and similar spotted, smallmouth and largemouth bass. In addition, the more common and similar brook and brown trout. Therefore, let’s move on to our comparisons.

Since many of these fish can be found in the same waters, many people wonder how their appearance compares to each other. Therefore, let’s answer the question, how can you tell a bass from a trout?

Freshwater bass have a greenish to brown body while trout have more orange, red or creamy color on the sides with an olive back. Trout have tiny, round speckled spots colored yellow, red or black while bass have more dark, blotchy spots or bars. Bass have two dorsal fins close together while trout have one isolated dorsal fin.

Other ways to tell the difference between a bass and trout:

  • The trout’s jaw extends past the center of the eye line. Freshwater bass, except for the largemouth, jaw doesn’t extend past the eye line.
  • Bass are longer and weigh more than trout. Adult trout average 2-6 pounds. Adult bass average 10-20 pounds.
  • The shape of the trout’s body is more narrow than the rounder and wider bass.

Bass fish and trout fish photo comparison

Trout and Bass Scientific Classifications, Families, Species

Smallmouth bass are from:

  • Family: Centrarchidae
  • Genus: Micropterus
  • Species: M. dolomieu
  • Common nicknames: Brownie, brown bass, bronze bass, small and bronze back.

Largemouth bass are from:

  • Family: Centrarchidae
  • Genus: Micropterus
  • Species: M. salmoides
  • Common nicknames: Bucketmouth, largies, green bass, bigmouth bass.

Spotted bass are from:

  • Family: Centrarchidae
  • Genus: Micropterus
  • Species: M. punctulatus
  • Common nicknames: Spots, spotty.

Brook trout are from:

  • Family: salmonidae
  • Genus: Salvelinus
  • Species: S. fontinalis.
  • Common nicknames: Speckled trout, brook charr, mud trout, squaretail.

Brown trout are from:

  • Family: salmonidae
  • Genus: Salmo
  • Species: S. trutta
  • Common nicknames: German brown, lake trout.

Bass and trout are a different species of fish from different families.

Trout and Bass Habitats

Smallmouth Bass

  • Smallmouth bass is native to the upper and middle Mississippi River Basin, the Great Lakes, Saint Lawrence River and the Hudson Bay Basin in Canada. They have been introduced into many cool-water rivers and lakes in the United States and Canada.
  • Smallmouth prefer colder waters.

Largemouth Bass

  • Largemouth bass are native to the eastern and central United States, southeastern Canada and northern Mexico. They have been introduced into many other areas as well.
  • Largemouth bass prefer warmer waters.

Spotted Bass

  • Spotted bass are native to the Mississippi River and across the Gulf states from Texas to Florida. In addition, they are found in the western Mid-Atlantic states. They have been introduced to Virginia, North Carolina and southern Africa.
  • Spotted bass prefer warmer waters with strong currents and turbulence.
  • Spotted bass prefer clear, open waters.
  • Commonly found in reservoirs and streams.

Brook Trout

  • Brook trout are found mostly in the northeastern United States and Canada. They have also been introduced to Europe and Asia.
  • Brook trout prefer cool, clean mountain streams.
  • Commonly found in streams, small rivers and lakes.

Brown Trout

  • Brown trout have been introduced to North and South America and are also found in Europe, Africa and Asia. They were first introduced to the U.S. from Germany in 1883.
  • Brown trout have a high tolerance for warmer waters.
  • Commonly found in rivers, ponds or lakes.

Freshwater trout and bass are commonly found in The United States and Canada.

Trout and Bass Appearance

Bass Colors

  • Spotted bass have a greenish gray body. They have dark, black spots forming a jagged horizontal line down the body.
  • Smallmouth have a golden olive to brownish body. They have brown vertical bars or thick stripes down the body. The head has dark brown horizontal bars.
  • Largemouth have a greenish gray body. They have dark, black blotches forming jagged horizontal lines down the body.

Trout Colors

  • Brook trout has an olive-green back. Along the sides the color transitions to an orange or red color and the belly is milky white. They are covered in yellow round spots which are wormlike near the back.
  • Brown trout are brown to an olive green near the top. The sides are a creamy, golden and off white on the belly. They are covered in black and golden, brown spots.

Dorsal Fins

  • Spotted bass has two dorsal fins clearly connected to each other.
  • Smallmouth have two dorsal fins separated by a shallow notch. The front dorsal is shorter with spine rays. The second dorsal is taller with soft rays.
  • Largemouth bass have two dorsal fins with no separation. The front dorsal is shorter with spine rays. The 2nd is taller with soft rays.
  • Brook trout have a larger front dorsal fin followed by a small fin closer to the tail.
  • Brown trout have a larger dorsal fin followed by a small fin closer to the tail.


  • The spotted bass jaw does not extend past the eye line.
  • The smallmouth bass protruding jaw doesn’t extend past the red or brown eyes.
  • The largemouth bass upper jaw extends past the eye socket.
  • The brown trout jaw extends past the center eye line.
  • The brook trout jaw extends past the center eye line.

Size and Weight

  • A spotted bass can grow up to 25 inches long and weigh up to 11 pounds. The average spotted bass is 8-15″ long and weighs 1-2 pounds.
  • Smallmouth bass average 12-16 inches long and weigh up to 10 pounds.
  • Largemouth bass average 15 inches and grow up to 20 pounds.
  • Brook trout grows to an average 9-10″ in length and weighs 1-6 pounds.
  • Brown trout in smaller rivers and streams average 7-14 inches long and 2 pounds. In the larger waters brown trout are longer and heavier.

Bass grow longer and weigh more than trout.


  • Spotted bass average lifespans is 7 years.
  • Smallmouth bass oldest reported age is 26 years.
  • Largemouth bass average lifespans are 10-16 years.
  • Brook trout averages 6 years.
  • Brown trout’s age varies from habitat to habitat. In smaller waters they average 5 years and up to 10 years in larger bodies of water.


Spotted bass consume the following:

  • Copepods
  • Crustaceans
  • Insects
  • Crayfish
  • Other smaller fish

Smallmouth bass consume the following:

  • Crayfish
  • Plankton
  • Insects
  • Other small fish

Largemouth bass consume the following:

  • Crayfish
  • Fish
  • Frogs
  • Insects
  • Crustaceans

Brown trout consumes the following diet:

  • Insects
  • Crayfish
  • Salamanders
  • Frogs
  • Mollusks
  • Small fish

Brook trout consumes the following diet:

  • Plankton
  • Insects
  • Worms
  • Crustaceans
  • Mollusks
  • Amphibians
  • Small mammals

For a complete comparison between smallmouth and largemouth bass check out my article, Smallmouth Bass vs Largemouth Bass: What’s The Difference?

Trout and Bass Nutritional Value

The following table is a side-by-side comparison of all the nutrients in brook trout, brown trout and freshwater bass:

Nutrient Brown Trout, raw (4 Ounces) Brook Trout, raw (4 Ounces) Freshwater Bass, raw (4 Ounces)
Calories 168 125 129
Fat 3.4 g 3.1 g 4.2 g
Saturated Fat 1.6 g 0.7 g 0.9 g
Cholesterol 66 mg 68 mg 77 mg
Protein 21 g 24 g 21 g
Sodium 61 mg 51 mg 55 mg
Omega-3 1.04 g 0.47 g 0.77 g
B-6 0.2 mg 0.3 mg 0.1 mg
B-12 8.8 mcg 3.1 mcg 2.2 mcg
Thiamin 0.39 mg 0.15 mg 0.08 mg
Riboflavin 0.37 mg 0.11 mg 0.08 mg
B5 2.2 mg 1.0 mg 0.8 mg
Iron 1.7 mg 0.4 mg 1.6 mg
Niacin 5.1 mg 6.0 mg 1.4 mg
Folate 14.7 mcg 13.6 mcg 17.0 mcg
Potassium 441 mg 472 mg 403 mg
Magnesium 32 mg 31 mg 34 mg
Phosphorus 277 mg 278 mg 226 mg
Calcium 48.7 mg 28.3 mg 90.7 mg
Zinc 0.7 mg 0.6 mg 0.7 mg
Selenium 15.0 mcg 14.3 mcg 14.2 mcg

Nutrient Sources 1 2 3 4 5 6 7 8 9

Both fish contain a good number of minerals and vitamins. At first glance it’s difficult to determine which fish provides more. Therefore, is trout or bass healthier?

Trout is healthier than bass due to its higher percentage of B vitamins and minerals. Trout provides more B6, B12, B5, thiamin, riboflavin, niacin, iron, potassium, phosphorus and selenium than bass. Trout and bass have similar amounts of omega-3 fatty acids and zinc.

Bass is also healthy and provides a wide variety of nutrients, minerals and vitamins. Bass provides more folate, magnesium and calcium. All these nutrients are beneficial to health explained down further in the article.

Bass and trout are renowned for being a part of many diets like keto or heart healthy.

If you’re eating low-carb or want to give keto a try, many of my clients have followed this 28-Day Keto Challenge with great success. Visit their website and check it out.

Trout and Bass: Tastes and Textures

One of the most important things people takes into consideration when choosing a fish is its taste. When comparing the two fish, does trout taste like bass?

Brook trout, spotted bass and smallmouth bass have a similar mild to sweet taste. Brown trout and largemouth bass have a stronger, fishier taste. Trout’s texture is medium compared to the bass firmer flesh. Trout is a little more flakier than bass. 

  • Brook trout is mild and somewhat sweet. It doesn’t taste or smell fishy. Brook trout’s texture is medium flakiness and delicate when cooked.
  • Brown trout has a stronger, fishier taste. The larger the brown trout was when caught, the more fishy taste the fillet will contain. The texture is delicate and flaky when cooked.
  • Spotted bass has a mild to sweet taste. Spotted bass is only slightly fishy but not overly strong. It’s much less fishier than a largemouth bass. The flesh is white and has a firm texture.
  • Smallmouth bass has a mild to sweet taste. Smallmouth is only slightly fishy but not enough to turn people away who don’t prefer a fishy taste. The flesh is white and has a firm texture.
  • Largemouth bass has a strong flavor and is a little fishy, more than smallmouth bass. Largemouth has white flesh which can be watery but is firm and meaty.

Many people soak brown trout or largemouth bass in milk overnight. This helps remove some of the fishiness by drawing out some of the oil.

If you’re wondering how brown trout and rainbow trout differ, check out my article, Rainbow Trout vs Brown Trout – What’s The Difference?

Trout and Bass Substitutions

When preparing recipes for dinner it’s not always possible to locate the type of fish called for. In addition, you may already have one type of fish and want to use it. If you have some trout, you may ask, can I substitute trout for bass?

Trout and bass can substitute for each other in recipes due to their similar medium to firm textures. Brook trout, spotted bass and smallmouth bass have similar mild to sweet flavors and can substitute for each other. Largemouth bass and brown trout can substitute for each other due to their similar strong to fishier flavor. 

The best brown trout substitutes include the following:

  • Rainbow trout
  • Salmon
  • Swordfish
  • Tuna
  • Northern pike
  • Mackerel
  • Herring
  • Bass

The best brook trout substitutes are:

  • Atlantic cod
  • Alaska pollock
  • Halibut
  • Rainbow trout
  • White Sea bass
  • Flounder

Smallmouth bass substitutes:

  • Freshwater trout
  • Lake herring
  • Mackerel
  • Snapper
  • Grouper
  • Halibut

Spotted bass substitutes are:

  • Halibut
  • Grouper
  • Snapper
  • Freshwater trout
  • Lake herring
  • Mackerel

Largemouth bass substitutes:

  • Tuna
  • Bluefish
  • Salmon
  • Walleye
  • Mahi mahi
  • Black Sea bass

Check out the best replacements for trout in my article, Trout Replacements: The 12 Best Healthy Substitutes.

How To Cook Bass

  • Smallmouth bass doesn’t have the same fishy flavor and smell that a largemouth contains. Smallmouth doesn’t have to be seasoned as much to cover up the fishiness.
  • Frying largemouth bass indoors can create a fishy smell which many people dislike. By adding many of the spices below can help lessen the fishy smell or taste. In addition, removing the skin and bloodline before cooking will help with the fishy taste.
  • Spotted bass doesn’t have the same fishiness and smell that a largemouth contains. For this reason spotted bass doesn’t have to be seasoned as much to cover up the fishy smell and flavor.

Bass can be pan fried, deep fried, grilled, baked, sautéed and broiled.

Bass flavor pairings:

  • Olive oil
  • Lemon
  • Dill
  • Garlic
  • Mustard
  • paprika
  • Black pepper
  • Parsley

How To Cook Trout

  • Some chefs fry brown trout in a beer batter. Others like baking it wrapped in foil with some potatoes, onion or garlic. The stronger flavor of brown trout doesn’t require heavy seasoning like some other white fish.
  • To lessen the fishy taste soak the brown trout in milk overnight to draw out some of the oil.
  • Many people cook fillets for 2-3 minutes on each side until lately browned and opaque. For whole trout, cook 3-4 minutes on each side until the flesh lifts from the backbone. The minutes may need to be adjusted depending on their size.

Flavor Pairing

  • Citrus
  • Lemon
  • Pepper
  • Cayenne pepper
  • Smoked paprika
  • Garlic
  • Chile powder
  • Barbecue sauce
  • Fresh herbs

Check out all the differences between spotted and largemouth bass in my article, Spotted Bass vs Largemouth Bass: What’s The Difference?

How Much Does Trout and Bass Cost

The costs for fish will vary depending on how they are caught and the location. Therefore, which is more expensive, trout or bass?

Brown trout and brook trout costs are similar. The average cost for brown and brook trout is approximately $28.00 per pound. Live trout for stocking cost $10.00 per pound and live largemouth bass costs $5 for a 6-8 inch fish.

Brown and brook trout and freshwater bass will probably not be found in a local store. I was unable to find any freshwater bass fillets. I checked online at the Fulton Fish Market and found the following prices:

  • Previous frozen brown trout fillet
    • $28.32 per pound

I checked online at Russ & Daughters and found brook trout:

  • (2) fresh whole brook trout for $20.000

Online I checked the prices of live trout for fish stocking.

  • $10.00 per pound for brook trout
  • $10.00 per pound for brown trout
  • $5.00 per 6-8 inch largemouth bass

To save some money on fresh seafood, would you believe some can be purchased on Amazon? Check out their current prices and selection, Fresh Seafood.

Trout and Bass Mercury Levels

The FDA and EPA have issued warnings and suggestions regarding mercury levels in fish and how often they should be consumed 10. This is especially important for the following:

  • Developing children
  • Young infants
  • Pregnant women

They established a list of the following:

  • Fish to avoid
  • Good choices
  • Best fish

Let’s answer, does trout or bass have more mercury?

Freshwater bass have higher levels of mercury than freshwater trout. Freshwater trout is listed on the FDA’s best choice of fish regarding mercury levels. Bass has been listed on some states advisory warnings in regards to high levels of mercury.  

If you’re pregnant, breast feeding or has a young child, Always check with a physician prior to eating new foods or changing your dietary habits.

Mercury warnings can change over time or affect only a particular area or state. Please check with your local EPA and FDA for the current recommendations 11.

Check out the detailed comparison of the spotted and smallmouth bass in my article, Spotted Bass vs Smallmouth Bass: What’s The Difference?

Trout and Bass Health Benefits

Editor’s Note: The information on Foods For Anti Aging is meant to be informative in nature and not meant to be taken as medical advice. The articles and opinions on this website are unintended to be used as as a treatment, prevention or diagnosis of health problems. Before modifying or starting any new nutritional, food, fitness, exercise or/and supplement routine, always check with your doctor first.

One major reason most fresh fish is healthy is due to their healthy fats, particularly omega-3 fatty acids. This section will explain why the omega-3s, vitamins and minerals are so important.

Omega 3 Fatty Acids

The omega -3 fatty acids provided help keep arteries healthy and are considered heart healthy.

The omega-3s may help with the following:

  • Reduce plaque buildup.
  • Help regulate heart rhythms.
  • Reduce inflammation.
  • Lowering triglycerides.
  • Keeping bad cholesterol low.
  • Keeping good cholesterol high.

Many studies suggest omega-3s boost the effectiveness of anti-inflammatory drugs. In addition, they’ve been shown to help reduce joint pain and stiffness in people with rheumatoid arthritis.

DHA and EPA, two of the fatty acids, are associated with lowering blood pressure and improving the health of blood vessels.

Researchers believe the fatty acids help keep a body’s blood vessels strong, capable and flexible. This allows for better blood flow and improved circulation of oxygen 12.

B Vitamins

The B vitamins provided by trout and bass include the following:

  1. B1 (thiamin)
  2. B2 (riboflavin)
  3. B3 (niacin)
  4. B5
  5. B6
  6. B9 (folate)
  7. B12

B vitamins help support the following:

  • Brain function.
  • Cardiovascular disease.
  • Red blood cells.
  • Digestion.
  • Nerve function.
  • Energy levels.


Most trout and bass provide 403 to 472 mg per four ounces. Potassium helps the body get rid of excess sodium which helps reduce fluid build-up. The result keeps systolic and diastolic blood pressure lower 13.

The more potassium you consume, the more sodium your body will lose. Consuming too much sodium or not enough potassium throws off the delicate balance the kidneys need to remove the excess water 14.

According to Harvard Health, a number of studies have shown a connection between low potassium levels and increased blood pressure 15.


The magnesium trout and bass provide helps keep blood pressure levels balanced and stable. A recent study researched 22 studies and concluded magnesium supplementation decreased diastolic and systolic blood pressure 16.

Magnesium helps control the following:

  • Muscle
  • Nerve function
  • Blood sugar
  • Blood pressure
  • Insomnia

It’s able to accomplish this because it helps calm the whole body including blood vessels.

In the muscles and heart, magnesium competes with calcium to help the muscles relax after contracting. When the body is low in magnesium, calcium can over stimulate the heart muscle’s cells causing a rapid or irregular heartbeat 17.


Selenium is a nutrient which doesn’t receive much attention in health related articles. I’m unsure why many people don’t write about it more. Many studies 18 show selenium may help to protect the following:

  • The immune system
  • Cognitive issues
  • Heart disease
  • Thyroid


Calcium which trout and bass provide is important for blood pressure and the heart.

Harvard Health reports calcium helps maintain blood pressure because it helps to control the relaxing and tightening of blood vessels 19.

Calcium also helps the following:

    • Improve nerve function.
    • Helps muscles function properly.
    • Build and maintain strong bones.

Additional Article Resources 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34


Do trout eat bass? Adult trout are smaller than adult bass, therefore they typically don’t eat bass. It’s more common for the larger bass to consume trout when sharing the same waters.

Read Next: More Bass and Trout Articles

Brook Trout vs Brown Trout – Let’s Compare The Differences

Trout vs Salmon: Is One More Healthier Than The Other?

Brown Trout vs Salmon – Are They The Same? Let’s Compare

Rainbow Trout vs Brown Trout – What’s The Difference?

Bass vs Catfish – What’s The Difference? Let’s Compare

Article Resources: Foods For Anti-Aging follows strict guidelines to ensure our content is the highest journalistic standard. It's our mission to provide the reader with accurate, honest and unbiased guidance. Our content relies on medical associations, research institutions, government agencies and study resources. Learn more by reading our editorial policy.
  1. New Zealand Food Composition Data: Trout, brown, flash, raw[]
  2. NutritionData: Trout[]
  3. Nutrition Value: Fish, raw, mixed species, trout[]
  4. USDA: Trout[]
  5. Nutrition Value: Fish, New York State, raw, brook, trout[]
  6. ScienceDirect: Addressing information gaps in wild-caught foods in the US: Brook trout nutritional analysis for inclusion into the USDA national nutrient database for standard reference[]
  7. Cornell University: Trout Nutritional Information: Brook Trout, raw[]
  8. Nutrition Value: Fish, raw, mixed species, fresh water, bass[]
  9. NutritionData: Fish, bass, fresh water, mixed species, raw[]
  10. FDA: Advice about Eating Fish[]
  11. National Center for Biotechnology Information: Mercury accumulation in largemouth bass (Micropterus salmoides) in a Florida lake[]
  12. National Center for Biotechnology: Marine Omega-3 Supplementation and Cardiovascular Disease[]
  13. American Heart Association: How Potassium Can Help Control High Blood Pressure[]
  14. National Center for Biotechnology Information: The Effect of the Sodium to Potassium Ratio on Hypertension Prevalence: A Propensity Score Matching Approach[]
  15. Harvard Health: Potassium lowers blood pressure[]
  16. National Center for Biotechnology Information: Effect of magnesium supplementation on blood pressure: a meta-analysis[]
  17. National Institutes of Health: Magnesium[]
  18. National Institutes of Health: Selenium[]
  19. Harvard Health: Key minerals to help control blood pressure[]
  20. Wikipedia: Smallmouth bass[]
  21. Wikipedia: Largemouth bass[]
  22. Wikipedia: Bass (fish) []
  23. U.S. Fish & Wildlife Service: Largemouth bass[]
  24. Florida Fish and Wildlife Conservation Commission: Spotted Bass[]
  25. Wikipedia: Spotted bass[]
  26. UK College of Agriculture, Food and Environment: Spotted Bass[]
  27. Texas Parks and Wildlife: Spotted Bass (Micropterus punctulatus) []
  28. National Park Service: Brown Trout[]
  29. Wikipedia: Brown trout[]
  30. U.S. Fish & Wildlife Service: Brook trout[]
  31. The National Wildlife Federation: Brook Trout[]
  32. Chesapeake Bay Program: Brook Trout[]
  33. Wikipedia: Brook trout[]
  34. Maryland Department of Natural Resources: Brook Trout[]

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