A home aquarium is a TANK or FISHTANK that is used to house aquatic animals, plants, and other organisms. It is a popular hobby for many people, as it allows them to create a miniature ecosystem in their own home. The TANK can be made of glass, acrylic, or other materials, and is usually filled with water and decorated with rocks, plants, and other decorations. Fish, invertebrates, and other aquatic creatures are added to the TANK to complete the ecosystem.