A brief description of the dwarf neon rainbowfish.

Newest tank mate: large neon dwarf Rainbowfish [Melanotaenia praecox]
Photo provided by Flickr
The Dwarf Neon Rainbow originates from New Guinea. It is also known as the Dwarf Rainbow, the Neon Dwarf Rainbow and the Neon Blue Rainbow. It is probably the most popular of all rainbows, because of its small size, its bright color, its active schooling nature and its compatibility with many other fish. The body is bright iridescent neon blue and silver. Males have red on the edges of their dorsal, anal and caudal fins. Females tend to be paler and to have yellow on their fin edges. Dwarf Neon Rainbows should be kept in groups of at least 6. They like well planted tanks with lots of open swimming space. They will eat floating flake foods and freeze dried bloodworms. They will also benefit from occasional live brine shrimp feedings.
Dwarf Neon Rainbowfish (Melanotaenia praecox)
Photo provided by Flickr
The dwarf neon rainbowfish is an excellent choice for those looking for something a little less common but still easy to keep. They are a little more expensive, but their beautiful coloration justifies the cost of keeping a large school of this fish. They are great for planted tanks, and they can provide a lot of activity without any aggression. If you have any experience keeping dwarf neon rainbowfish, please leave a comment below. Melanotaenia praecox "Neon Dwarf Rainbow" I have a school of 8 of these guys, beautiful fish.
Photo provided by FlickrA brief description of the dwarf neon rainbowfish.
Photo provided by FlickrDwarf Neon Rainbowfish, (Melanotaenia praecox)
Photo provided by Flickr
Description
The Dwarf Neon Rainbowfish can reach a length of roughly 6 cm. The body is neon blue with contrasting red dorsal, anal and caudal fins.Keeping Dwarf Neon Rainbowfish in aquariums
The Dwarf Neon Rainbowfish is of a peaceful disposition and can be kept with other non-aggressive species in the community aquarium or with its own kind only in a species aquarium. Always keep at least five Dwarf Neon Rainbowfishes together, ideally more. Ideally combine fishes of roughly the same size. The aquarium should contain a lot of aquatic plants and good hiding spots. Keep the water temperature in the 24-28 degrees C (75-82 degrees F) range. Unlike many other rainbowfishes, the Dwarf Neon Rainbowfish prefers acidic water. The recommended pH-range is 6.5-6.9.Geographical distribution, habitat and conservation
The Dwarf Neon Rainbowfish inhabits streams in the Mamberamo region of West Papua (formerly known as Irian Jaya). It has been found in streams on the edge of the Mamberamo Plains. The typical Dwarf Neon Rainbowfish habitat has clear and swift flowing water with a temperature of roughly 28 degrees C (82 degrees F) and a pH-value of 6.5. The Mamberamo region has not been extensively surveyed and more investigation is necessary if we want to know the exact geographical range of this species. The dwarf neon rainbow is a small schooling fish that is endemic to the Mamberamo river system, New Guinea, Indonesia, where it tends to inhabit swiftly flowing tributaries off the main river, as well as surrounding swamps and marshes. These fish will often congregate around areas of aquatic vegetation or submerged roots and logs. This species is of the typical elongated rainbow appearance. It has a shiny blue and silvery body with orange to red fins and tail. It grows to an adult size of up to 3.2 inches in length. Males are larger and deeper bodied than females and have brighter coloration. Breeding Dwarf Neon Rainbowfish
If you want to your Dwarf Neon Rainbowfish to spawn, you need to provide them with suitable spawning media in the aquarium. You can for instance use spawning mops or densely grown java moss. Well-fed adult fish will normally leave eggs and fry alone in the well planted aquarium. If you keep the water temperature in the upper part of the recommended range you can expect the eggs to hatch within 10 days. You can feed the fry infusoria and finely ground flakes until they are big enough to eat newly hatched brine shrimp and gnaw on whole flakes. The dwarf neon rainbow is typically a very peaceful fish and suitable for a community aquarium. It will fare especially well in a heavily planted aquarium. Do not keep the dwarf neon rainbow with any fish large enough to eat it or with aggressive fish. Good tank mates include other similarly sized rainbowfish, cory catfishes, many tetras, small peaceful barbs, pencil fishes, freshwater gobies, hatchet fishes, peaceful dwarf cichlids, and small algae eating catfishes (otocinclus, bristle nose, clown, and rubber plecos).