Aquarium keeping involves maintaining a controlled environment for aquatic life, such as fish, plants, and invertebrates. It requires a suitable tank, filtration system, and regular water quality checks to ensure the health of the inhabitants. Common types of aquariums include freshwater, saltwater, and reef tanks, each with specific requirements for temperature, pH, and salinity. Successful aquarium keeping also includes proper feeding, tank maintenance, and understanding the compatibility of different species. Hobbyists often use equipment like heaters, lights, and decorations to create a visually appealing and functional habitat. Resources like aquarium clubs and online forums can provide valuable support and information.