Indoor containers holding water and creatures (fish, crustaceans, snails, etc.). For specificity, consider adding a "freshwater" or "saltwater" tag.
Indoor containers, vivariums, which hold water and aquatic creatures (fish, crustaceans, snails, etc.)
Sample questions might discuss set-up, environment maintenance, and care for residents.
If useful, consider one or more descriptive tags to distinguish aquarium type: freshwater, saltwater or reef-tank.
For the purpose of this tag, aquariums are defined as indoor containers of any size. Use pond for questions about outdoor containers.
Non-aquatic vivariums should use the terrariums tag.