Fish Culture 1

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Across
  1. 3. The number of fish stocked per unit area or volume.
  2. 4. Component that removes ammonia using bacteria.
  3. 6. Warm-water fish species (Oreochromis niloticus).
  4. 9. The farming of aquatic organisms like fish and shellfish.
Down
  1. 1. Production system with LOW density and natural feed only.
  2. 2. Growing plants in water without soil.
  3. 5. Marine fish species (Sparus aurata).
  4. 7. Toxic compound excreted by fish.
  5. 8. Food production system combining aquaculture and hydroponics.