Pacific Salmon and Similar Species
Oncorhynchus
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Open the appSeveral fish can be confused with Pacific Salmon. Here are the key differences.
Species often confused with {name}
Atlantic Salmon
Salmo salar
Key differences: Atlantic salmon typically have fewer, larger spots on their body, usually above the lateral line, and a more slender caudal peduncle. Their vomerine teeth are in a single, zigzag row, whereas Pacific salmon have vomerine teeth in two rows or a patch. Atlantic salmon are iteroparous (can spawn multiple times), unlike most semelparous Pacific salmon.
Rainbow Trout / Steelhead
Oncorhynchus mykiss
Key differences: Steelhead (anadromous Rainbow Trout) are often confused with Coho salmon. Steelhead typically have a more pointed snout, a broader caudal peduncle, and a more uniform pattern of small spots over their entire body and fins. Their mouth does not extend past the eye, unlike many salmon species. The gum line is typically white.
Cutthroat Trout
Oncorhynchus clarkii
Key differences: Cutthroat trout are distinguished by the distinctive red or orange slash marks under their lower jaw. They also typically have more numerous, smaller spots concentrated towards the tail.
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