A fish tank is a transparent container, usually made of glass or acrylic, designed to hold water and aquatic life. It provides a controlled environment for keeping fish and other aquatic organisms, allowing for observation and enjoyment. Fish tanks come in various sizes and shapes, catering to different species and aesthetic preferences. To maintain a healthy ecosystem, fish tanks require proper filtration, heating, and lighting. Essential equipment includes a filter to clean the water, a heater to regulate temperature, and aquatic plants to enhance the habitat. Regular maintenance, such as water changes and cleaning, is crucial for the well-being of the fish.