The dwarf rainbowfish (Melanotaenia praecox) is a species of rainbowfish in the subfamily Melanotaeniinae, also commonly known as the neon rainbowfish. It is endemic to the Mamberamo River basin in West Papua in Indonesia and common in the aquarium trade. Males tend to be brighter in color and have deeper bodies than the females. This species' is considered to be an egg-scatterer, so it is easy to breed.Their bodies are bright blue and iridescent, and their fins are colorful. This species is active and is known to jump out of water. They are native to a tropical climate.
Wikipedia contributors. (2019, September 9). Dwarf rainbowfish. In Wikipedia, The Free Encyclopedia. Retrieved 03:52, October 19, 2019, from https://en.wikipedia.org/w/index.php?title=Dwarf_rainbowfish&oldid=914808380
Picture: http://www.tropical-fish-keeping.com/wp-content/uploads/2015/06/Praecox-Rainbowfish-Melanotaenia-praecox.jpg