- Longjawed galaxias
name = Longjawed galaxias
genus = "
species = "G. prognathus"
binomial = "Galaxias prognathus"
binomial_authority = Stokell, 1940
The longjawed galaxias, "Galaxias prognathus", is a
galaxiidof the genus" Galaxias", found only in rivers and streams at mid to high altitudes on the eastern side of the Southern Alpsin the South Islandof New Zealand. It grows to a length of up to 9 cm.
Longjawed galaxias are slender and elongate, having coloration consisting of spots and indistinct bands of various shades of brown and grey. The single dorsal and
anal fins are about two thirds of the way along the body. Like all galaxiids it lacks scales and has a thick, leathery skin covered with mucus. The lower jaw is forward of the upper, giving rise to its common name.
The longjawed galaxias has seven
pelvic finrays, which distinguishes it from the recently separated lowland longjawed galaxias"Galaxias cobitinis" which has only five.
The longjaw galaxias is non-
diadromous, and the whole life cycle takes place in fresh water. Spawning occurs from March to May and also from October to November. They are nocturnalfeeders and live on a variety of aquatic insects, especially mayflies.
* [http://www.niwascience.co.nz/rc/freshwater/fishatlas/species/longjaw_galaxias NIWA June 2006]
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