Possible Clues:

• Some red deer
• Caviar and uni
• Some sushi toppers
• Beluga and ossetra
• Sounds as if they might have nicer smell than one of 4 down
• Hatchery supplies
• Harts' mates
• Eggs have gone up, by the sound of it
• The eggs sound as if they blooming well got up here
• Sounds as if there's something blooming fishy about them