Usage patterns
〈場所〉産の魚介類seafood produced/sourced from a place
This restaurant uses seafood sourced from Hokkaido.
魚介類にアレルギーがあるto have an allergy to seafood
My son has an allergy to seafood.
魚介類を扱うto deal in / handle seafood (as a business)
This market deals in fresh seafood.