Aquarium inhabitants include a variety of aquatic species that can thrive in a controlled environment. Common inhabitants are fish, such as goldfish, betta fish, and neon tetras, which come in various colors and sizes. Other inhabitants may include shrimp, snails, and aquatic plants, all contributing to the ecosystem of the aquarium. In addition to fish and invertebrates, some aquarists choose to keep amphibians like frogs or newts. Each species has specific care requirements, including water temperature, pH levels, and tank mates. Properly maintaining these conditions is essential for the health and well-being of all aquarium inhabitants.