Establishments primarily engaged in the production of finfish and shellfish, such as crustaceans and mollusks, within a confined space and under controlled feeding, sanitation, and harvesting procedures. Establishments primarily engaged in hatching fish and in operating fishing preserves are classified in Industry 0921.

• Catfish farms
• Crustacean farms
• Finfish farms
• Fish farms, except hatcheries
• Goldfish farms
• Minnow farms
• Mollusk farms
• Tropical aquarium fish farms
• Trout farms