Coastal Cutthroat Trout and Similar Species
Oncorhynchus clarkii clarkii
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Open the appSeveral fish can be confused with Coastal Cutthroat Trout. Here are the key differences.
Species often confused with {name}
Rainbow Trout
Oncorhynchus mykiss
Key differences: Rainbow Trout typically lack the red/orange cutthroat slashes (though some hatchery strains may show faint markings), have fewer and more evenly distributed spots, and their maxillary bone usually does not extend past the eye. They also lack basibranchial teeth.
Coastal Rainbow Trout (Steelhead)
Oncorhynchus mykiss irideus
Key differences: Steelhead are the anadromous form of Rainbow Trout. They are very silvery like sea-run cutthroat but lack the cutthroat slashes and basibranchial teeth. Their spotting pattern is also generally different, with fewer spots on the tail.
Other Cutthroat Trout Subspecies
Oncorhynchus clarkii spp.
Key differences: Distinguishing Coastal Cutthroat from other inland cutthroat subspecies (e.g., Westslope, Yellowstone) often requires genetic analysis or detailed meristic counts, as their geographic ranges are generally distinct and morphological differences can be subtle. Coastal Cutthroat are typically more heavily spotted than many inland subspecies.
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