Aquarium fish encompass a diverse array of species that are kept in home or public aquariums for their aesthetic appeal and often for the enjoyment of observing their behavior. These fish span a wide range of colors, sizes, and behaviors, catering to the preferences and expertise of hobbyists. Popular aquarium fish species include the vibrant and peaceful Neon Tetra, the striking and hardy Guppy, the graceful and colorful Betta, and the majestic and intelligent Angelfish, among many others. Each species has unique care requirements, including specific water parameters, diet, and tank size, which should be considered when creating a suitable environment for these aquatic pets.