Tropical Aquarium

Official assembled-model image; assembly required.

LEGO Tropical Aquarium (10366) is a 4,154-piece building set for ages 18+. Builds an aquarium display with four fish, coral, plants and sea creatures. Cranks and dials animate a fish, coral, emerging crab and treasure chest.

Release schedule: 2025-11-13 (LEGO Insiders early access); general release 2025-11-16

Official manufacturer product promotional image of the model; not current inventory or a boxed-stock photograph.

Specifications

• Set number: 10366
• Pieces: 4154
• Age recommendation: 18+
• Product line: LEGO® Icons
• Design features: Builds an aquarium display with four fish, coral, plants and sea creatures; Cranks and dials animate a fish, coral, emerging crab and treasure chest
• Dimensions: Fish tank: over 36 cm high, 52 cm wide, 28 cm deep.
• Early access date: 2025-11-13
• General release date: 2025-11-16
• Retail format: Brick building set
• Retail units: 1
• Release market: Manufacturer announcement schedule; regional arrival may differ