In Aquaria, players represent keen members of an aquarist society who are each determined to have the best aquarium in the club. Each player looks after their own aquarium, which is home to various types of fish and aquatic plants.

Throughout the game players will buy new fish, feed them, and keep their aquaria in tip-top condition. Players will also show how they have progressed in their aquarist studies by how far they have moved on the encyclopedia tracks. Whoever has the most points at game's end wins.

—description from the publisher