A small sea trout or similar fish found in Scottish and Northern European waters; a young or small finned fish.
From Scottish Gaelic or Scandinavian sources, related to 'fin' and possibly diminutive suffixes. Used in fishing contexts to describe smaller fish species caught in northern regions.
Scottish fishing communities had super specific names for fish at different ages and sizes—'finnoc' was just one of dozens of hyper-local terms that made fishermen sound like experts to outsiders!
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