How Can You Tell a Brook Trout From a Rainbow Trout?

Are you an avid angler? Do you find yourself confused when differentiating between a brook trout and a rainbow trout?

Well, fear not! In this article, we will explore the key characteristics that can help you easily tell these two popular fish species apart. So, let’s dive in!

Body Shape and Coloration

One of the most noticeable differences between brook trout and rainbow trout lies in their body shape and coloration. A brook trout typically has a streamlined body with a slightly forked tail. On the other hand, a rainbow trout has a more oval-shaped body with a square-shaped tail.

When it comes to coloration, both species exhibit beautiful patterns, but they differ significantly. The brook trout showcases vibrant colors, ranging from olive-green to dark brown on its back.

Its sides are adorned with worm-like markings called vermiculations that are light yellow or pale red. Moreover, brook trout’s lower fins have white leading edges.

Rainbow trout, as their name suggests, display a wide array of colors. They have a silver body with a pinkish hue along the sides.

The back of rainbow trout is usually olive-green or blueish in color. Perhaps the most distinguishing feature of these fish is their lateral line, which is often vividly colored and runs horizontally along their bodies.

Habitat and Range

The next aspect to consider while distinguishing between brook trout and rainbow trout is their habitat and range.

  • Brook trout, also known as speckled trout or squaretails, thrive in coldwater streams with clean water and rocky bottoms. They prefer shallow waters with ample cover like fallen logs or overhanging vegetation.
  • Rainbow trout, on the other hand, inhabit a broader range of environments.

    They can be found in both rivers and lakes, as well as streams with colder water temperatures. Rainbow trout are known for their adaptability and can survive in a wide range of habitats.

Size and Weight

While size alone is not a reliable indicator, it can provide some insight into the species of trout you have caught.

Average brook trout usually measure between 10 to 15 inches in length and weigh around 0.5 to 2 pounds. However, brook trout can grow much larger under favorable conditions, reaching lengths of up to 24 inches and weighing over 6 pounds!

Rainbow trout, on the other hand, tend to be slightly larger. The average size for rainbow trout ranges from 12 to 20 inches in length and weighs between 0.5 to 5 pounds. Some exceptional specimens have been known to surpass lengths of 30 inches and weigh over 20 pounds!

Fishing Techniques

Lastly, let’s talk about fishing techniques specific to each species.

Brook trout are often attracted to smaller lures or flies that mimic their natural prey like insects or small fish. Light spinning tackle or fly fishing gear is commonly used when Targeting brook trout.

Rainbow trout, being more opportunistic feeders, will strike at a wider variety of baits and lures. You can use anything from worms, small spinners, or even artificial flies when fishing for rainbow trout.

In conclusion,

Distinguishing between brook trout and rainbow trout may seem challenging at first glance. However, by paying attention to their body shape, coloration patterns, habitat, size, and fishing preferences, you can easily tell these two species apart. So next time you’re out on the water and catch a trout, take a closer look and impress your fishing buddies with your newfound knowledge!

Photo of author

Daniel Bennet