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Cherax Sp Blue / Papua Yabby / Blue Crayfish

Cherax Sp Blue
The Blue Papua Crayfish
Cherax Holthuisi 
Cherax Holthuisi Blue
Cherax Blue
Cherax Blue Knight
Blue Crayfish
Huna Biru
Lobster Biru
Papua Blue

Local Name in Papua : Huna / Huna Blue, Huna Biru, Lobster Biru
Indonesian Name : Blue Papua
Other name : Papua Yabby, Blue Papua Yabby

Kingdom:     Animalia
Phylum:     Arthropoda
Subphylum:     Crustacea
Class:     Malacostraca
Order:     Decapoda
Family:     Parastacidae
Genus:     Cherax
Subgenus:     Cherax
Species:     Cherax Holthuisi

Habitat : Papua, Irian Jaya, Indonesia and Papua New Guinea
Water Temperature : 22 - 28 derajat celcius

Size in Natural : Up to 15 gram 81–93 mm (3.2–3.7 in)

Male Large then Female

Blue / Soft Blue in Body Color

Cherax Holthuisi / Cherax Sp Blue  is a species of crayfish from the Bird's Head Peninsula in New Guinea. It grows to a total length of 81–93 mm (3.2–3.7 in). It was described in 2006 after animals circulating in the aquarium trade could not be assigned to any known species.

The total length of Cherax Holthuisi is 81–93 millimetres (3.2–3.7 in). In the wild, it is Drak Blue,Blue or soft blue, although Orange varieties are also sold in the aquarium trade. It is chiefly differentiated from the other species in the genus Cherax by the form of the rostrum, the shape of the claws and the small size of its eyes. In  Cherax Holthuisi / Cherax Sp Orange , the rostrum has two indentations on each side, and several indistinct lobes; in most other species, there are 3–8 teeth on the rostrum

Distribution and habitat
In the wild, Cherax Holthuisi / Cherax Sp Blue has only been recorded from Aitinjo Lake (1°25′28″S 132°22′22″E) on the Bird's Head Peninsula at the western end of New Guinea, in the Indonesian province of West Papua. The lake is 4 kilometres (2.5 mi) long and up to 350 metres (1,150 ft) wide, and is surrounded by steep mountains.  Cherax Holthuisi / Cherax Sp Blue  has been listed as Data Deficient on the IUCN Red List, pending better knowledge of its biology.

Specimens of  Cherax Holthuisi / Cherax Sp Blue and Cherax Sp Orange were collected in 1952, when M. Boeseman bought nine individuals from locals on the shores of Lake Aitinjo. They were deposited in the Rijksmuseum van Natuurlijke Historie (now part of Naturalis) as lots RMNH D 51503 and RMNH D 51504. The species remained undescribed, however, until Christian Lukhaup and Reinhard Pekny attempted to identify some exotic crayfish then on the market in Germany. Their specimens did not accord with any of the nine species described from New Guinea by Lipke Holthuis, but did match Boeseman's undescribed specimens. Lukhaup and Pekny therefore described the new species in a 2006 publication in Zoologische Mededelingen and called it Cherax Holthuisi in honour of Lipke Holthuis. One juvenile was later discovered among specimens described as the new species Cherax boesemani in 2008.