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Why do fish smell of ammonia?

GeneralClass 12AllAnswered 27 Mar 2026
Answer

Fresh fish shouldn't smell strongly of ammonia. The ammonia odor develops as fish spoils bacteria break down proteins and other nitrogen-containing compounds, releasing ammonia. A strong ammonia smell indicates the fish is old and should not be eaten. Fresh fish has a mild, ocean-like smell, not a pungent ammonia odor.

General · Class 12