Aquarium (Subnautica)
Category: Interior Modules
Description: Self-sustaining aquatic habitat.
The Aquarium is an Appliance that can be built inside the Cyclops or a Seabase module using a Habitat Builder. It can hold up to eight slots of the small Fauna which are categorized as Food. They can be added by clicking on the aquarium to bring up its Inventory menu, and placing the fauna. Only edible creatures can be placed inside.
Though the databank entry mentions the aquarium's automatic environmental regulation sustains the occupants, an aquarium is not actually required to store live animals, which will survive indefinitely in any storage. The survival of creatures in an aquarium, or any other storage, does not depend on the Seabase or Cyclops having power. Unlike the Alien Containment, fauna will not breed in the Aquarium.
Strictly speaking, the aquarium's only purpose is decorative, other than perhaps the feature that the number and types of creatures inside can be seen without having to open the inventory, unlike other storage containers.
Spoiler alert: If a creature infected with the Kharaa Bacterium is placed in an aquarium, the bacterium will infect all other creatures present.
Recipe
| Material | Quantity |
|---|---|
 Glass | 10 |
 Titanium | 5 |
Crafted With: 
Habitat Builder
Data Bank Entry
The aquarium is designed to hold and sustain up to eight small aquatic organisms, and fits inside a regular multipurpose habitat room.
Aquatic creatures make up 70% of all known species, making the aquarium a commonly deployed tool in many exploratory operations. It is just as often used to house livestock for later consumption as it is to hold specimens for xeno research. An automated environment regulation system means there's no need to feed or care for your subjects.
NB Due to its size the regular aquarium is not rated for breeding applications, and creatures are highly unlikely to mate. Construct a full size alien containment unit for this purpose.
Gallery
Aquarium with some edible fauna inside
Aquarium inside a Multipurpose Room
GIF - Aquarium with air bubbles
Developer screenshot from Trello
Developers screenshot from in-game found on Trello
Aquarium Concept art
The Aquarium placed inside of a Cyclops