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Overview
Aquariums let you display caught fish inside your home as living decorations. They are unlocked by completing the Finny Roommates quest early in the game. As you advance through the Angler profession, larger aquarium sizes become available from Delphin's shop at the AquaBlue Outpost at Half-Moon Bay. The game tracks over 105 sea creatures across 8 biome types in the Islandpedia, giving completionists plenty to collect and showcase.
Finny Roommates quest
This quest unlocks aquariums and becomes available on the Bulletin Board after talking to Delphin at the AquaBlue Outpost. You must have completed the Apprentice Crafter trial and spoken to Zerine before the quest appears.
Quest steps
Accept the Finny Roommates quest from the Bulletin Board.
Catch 10 fish and bring them to Solara at the Community Center in Starsand Town.
Craft a Softwood Plank using a Cutter (processing station on your farm at Hopeland).
Talk to Solara, then to Yang. Cook Soup Dumplings for them (recipe available at campfire; ingredients: Flour + Meat Bites).
Deliver the Soup Dumplings, then gather materials: Glass Panes, Stone Bricks, and Softwood Planks (all processable at farm facilities).
Complete the quest. Solara gives you your first Aquarium, which you can place inside your home.
Aquarium sizes
Cube Aquariums come in multiple sizes, unlocked progressively through Angler profession levels. Blueprints are purchased from Delphin at the AquaBlue Outpost.
Item | Description |
|---|---|
Cube Aquarium (basic) | Apprentice Angler. ~500 coins. |
Cube Aquarium (S) | Junior Angler. |
Cube Aquarium (M) | Intermediate Angler. |
Cube Aquarium (L) | Senior Angler. |
Cube Aquarium (XL) | Expert Angler. ~8,500 coins. |
Aquarium Building Manual | Expert Angler. High-tier blueprint for custom aquarium construction. |
Larger aquariums can hold more fish and display them in a bigger tank. Blueprint prices range from approximately 500 to 8,500 coins.
Fish ponds
Beyond display aquariums, the fishing profession also unlocks Fish Ponds, outdoor farm structures used to raise and breed fish on your farm at Hopeland. Blueprints are sold at the AquaBlue Outpost:
Item | Description |
|---|---|
Small Fish Pond | Junior Angler. |
Stone Fish Pond | Junior Angler. |
Medium Fish Pond | Intermediate Angler. |
Fish Pond blueprints cost between 2,500 and 6,500 coins.
Fish traps
Fish Traps let you catch fish passively without active fishing. They are unlocked at the Intermediate Angler tier. Place them in water and return later to collect your catch.
Known issue: Fish Traps placed in rivers and certain water locations can clip through terrain and disappear. The community recommends placing traps at Half-Moon Bay beach near the existing fish traps by Delphin's location, where they work reliably.
All AquaBlue Outpost blueprints by tier
Here is the complete list of fishing-related blueprints Delphin sells, organized by Angler certification level:
Item | Description |
|---|---|
Apprentice | Chrono Rod, Cube Aquarium, Chopper I. |
Junior | Noble Rod, Cube Aquarium (S), Small Fish Pond, Stone Fish Pond, Chopper II. |
Intermediate | Solar Rod, Cube Aquarium (M), Medium Fish Pond, Fish Trap, Chopper III. |
Senior | Titanium Rod, Cube Aquarium (L). |
Expert | Aquarium Building Manual, Cube Aquarium (XL). |
Tips
Complete the Finny Roommates quest as early as possible. It also teaches you Soup Dumplings, which are needed for the Starsand Station fast travel quest.
Aquariums make great home decorations and count toward the Home Items category in the Islandpedia.
Catch rare fish in the three deep-sea zones (Coral Sea, Luminwave, Celestwave) accessible from Starsand Port and display them in your largest aquarium.
Fish Ponds let you breed fish on your farm at Hopeland for a steady supply of fish to sell or cook, freeing up time you would otherwise spend at the water.
Upgrade to larger aquariums as your Angler tier increases: the XL size at Expert is the ultimate showcase piece.