Boeseman's rainbowfish
Encyclopedia
Boeseman's rainbowfish (Melanotaenia boesemani) is a species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of fish
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 in the Melanotaeniidae family. It is also known as Boesemani rainbowfish. It is endemic to Ayamaru River in a mountainous region of the Vogelkop Peninsula, West Papua.

It is also available in the aquarium hobby, where it is prized for its excellent colors and peaceful demeanor. The colour pattern is completely different to most other forms of rainbowfish as it has a half orange-red rear and a blueish-grey or purple front which in some specimens is almost defined perfectly as though the fish has been dipped in paint from both ends. Melantotaenia boesemani will often grow to lengths that exceed 10 centimetres if given the right food and water conditions.
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