Genus Pomacentrus, a group of small, brightly colored fish commonly known as damselfish, has various synonymous names that refer to the same group. Some of these include Chromis, Dascyllus, Neopomacentrus, and Abudefduf. These names are often used interchangeably depending on the context and the focus of the discussion. Despite having different names, all these fish share similar characteristics such as a compressed body, large eyes, and a spiny dorsal fin. They are commonly found in coral reefs and tropical waters worldwide and are popular among aquarium enthusiasts. Knowing these synonyms can help enthusiasts and professionals alike better identify and understand different species within the Genus Pomacentrus.