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- For the Fish Tank Bundle, see Bundles#Fish Tank.
Fish Tanks are furniture items. There are different sizes of fish tanks that can house different numbers of items.
Certain items can be added to the fish tank to change its appearance by holding the item and right-clicking on the tank. To get a list of the items inside or to remove them, right-click on the tank with empty hands. The location and appearance of the decorations and any stationary animals placed inside is random and can be changed without removing items by picking up and re-placing the tank.
Fish tanks are allowed to have the following contents:
|Decorations||1 of each type||Coral Seaweed Stone|
|Bottom Creatures||Limited amount, depending on type of fish tank||Moving: Blobfish Crab Crayfish Lobster Sandfish Snail Stonefish Flounder||Stationary: Clam Cockle Mussel Periwinkle Oyster Sea Cucumber Sea Urchin Super Cucumber|
|Swimming Creatures||Limited amount, depending on type of fish tank||Shrimp All other fish|
There are 5 types of fish tanks. The Deluxe Fish Tank is only available after completing the Tropical Fish special order. All fish tanks with the exception of the Aquatic Sanctuary can be purchased from Willy's Fish Shop and is available from the Furniture Catalogue. The Aquatic Sanctuary is only available from Qi's Walnut Room and cannot be found in the Furniture Catalogue.
Most of the swimming creatures either move around without animating (e.g. Pufferfish, Octopus) or move their tails / rear parts of their bodies at various speeds while swimming. However, some of the swimming creatures have unique animations: