How Can You Tell the Difference Between a Cutthroat Trout and a Rainbow?

Are you an angler trying to differentiate between a cutthroat trout and a rainbow trout? It can be tricky since they share some similarities in appearance, but there are a few key differences that can help you tell them apart.

Body Appearance: One of the easiest ways to tell the difference between a cutthroat trout and a rainbow trout is by examining their body appearance. Cutthroat trout have distinct orange-red slashes on the underside of their jaws, which give them their name. Rainbow trout, on the other hand, have a more uniform body coloration with no such slashes.

Fins: Another distinguishing feature between these two types of trout is their fins. Cutthroat trout have orange-red markings on their fins, particularly on the lower fins or pectoral fins. Meanwhile, rainbow trout have silver-colored fins with black spots or markings.

Size:

The size of the fish can also provide clues to its species. In general, cutthroat trout tend to be smaller than rainbow trout. Cutthroats usually measure between 6-18 inches in length while rainbows typically range from 12-24 inches.

Habitat:

Knowing where each fish species typically resides can also help identify them properly. While both types of fish prefer cold water environments such as lakes and streams, cutthroat trout are often found in higher elevations and smaller streams compared to rainbows which prefer larger rivers and lakes.

  • Cutthroat Trout: Higher elevation streams and small rivers
  • Rainbow Trout: Larger rivers and lakes

Bite: Finally, if you’re still unsure about whether you’ve caught a cutthroat or rainbow trout after examining all these factors, take note of how it bites. Cutthroats tend to be more aggressive biters compared to rainbows. If you feel a strong and aggressive tug on the line, there’s a good chance you’ve hooked a cutthroat trout.

In conclusion, differentiating between cutthroat trout and rainbow trout can be challenging, but by examining their body appearance, fins, size, habitat and bite pattern, it becomes easier to tell them apart. Next time you’re out fishing for trout, use these tips to help identify any catches that come your way!

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Michael Allen