Brook Trout and Similar Species
Salvelinus fontinalis
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Open the appSeveral fish can be confused with Brook Trout. Here are the key differences.
Species often confused with {name}
Brown Trout
Salmo trutta
Key differences: Brown Trout have prominent dark spots (often with light halos) and sometimes red spots, but lack the vermiculations on the back and the white leading edge on the lower fins of Brook Trout. Their tail is typically less square and more moderately forked. Brown Trout also have teeth on the vomer shaft.
Rainbow Trout
Oncorhynchus mykiss
Key differences: Rainbow Trout are characterized by a prominent pink or red stripe along their lateral line and numerous small black spots over their entire body and fins. They lack the vermiculations and the distinct white-black-red fin pattern of Brook Trout. Their tail is typically moderately to deeply forked. Rainbow Trout also have teeth on the vomer shaft.
Lake Trout
Salvelinus namaycush
Key differences: Lake Trout are also chars (genus Salvelinus) and share some characteristics, but are generally much larger, have a deeply forked tail, and typically have light spots on a darker background, but lack the vibrant red/orange spots and the distinct white fin edges of Brook Trout. Their body shape is also more elongated and slender.
Arctic Char
Salvelinus alpinus
Key differences: Arctic Char are closely related and can be difficult to distinguish in some forms. However, Arctic Char typically have larger, fewer, and more widely spaced light spots on a darker background, and often lack the distinct vermiculations and the prominent red/orange spots with blue halos seen in Brook Trout. Their coloration can be highly variable, especially during spawning.
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