Sea Trout and Similar Species
Salmo trutta trutta
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Open the appSeveral fish can be confused with Sea Trout. Here are the key differences.
Species often confused with {name}
Atlantic Salmon
Salmo salar
Key differences: Atlantic Salmon typically have a more slender caudal peduncle, a smaller mouth (maxillary not extending beyond the eye in adults), fewer and smaller spots (rarely below the lateral line), and distinct black spots on the caudal fin. Their vomerine teeth are in a single row, not zig-zag.
Brown Trout (resident form)
Salmo trutta fario/lacustris
Key differences: Genetically identical, but the resident forms (riverine or lacustrine) do not undertake marine migrations. Sea trout are typically more silvery and streamlined when returning from the sea, and generally grow larger due to the richer marine feeding grounds.
Rainbow Trout
Oncorhynchus mykiss
Key differences: Rainbow Trout have a distinct pink or red stripe along the lateral line, and numerous small black spots on the dorsal fin and caudal fin. Their adipose fin is typically larger and more rounded.
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