Also known as the Dwarf Neon Rainbowfish and the Neon Dwarf Rainbowfish, this is a stream-dwelling species endemic to the Mamberamo region of West Papua or Western New Guinea. Dwarf Rainbowfish can be found in flowing streams as well as still ponds. Because they can be found in a variety of habitats, this species is highly adaptable in the home aquarium. Like most Rainbowfish, the males can be easily distinguished from the females by the brighter coloration as well as the longer anal and dorsal fins. Males are a bright neon blue with reddish colored anal, caudal and dorsal fins.