Inanga. Galaxias maculatus (Jenyns, ). PDF Version. S.C. Moore. Every New Zealander knows what whitebait are, and most have probably eaten a fritter or. Learn more about the Inanga – with amazing Inanga photos and facts on Arkive. Description. Small, sleek and slender, with a small head and large eyes. Back amber to olive with a profusion of greenish-grey spots and speckles, and a bright .
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Because these sink rivers produce no eggs or larvae, a gap is created during marine dispersal.
Maximum size 19 cm TL; usually to around cm TL. Native range All suitable habitat. Hatching occurs during subsequent floods.
Every New Zealander knows what whitebait are, and most have probably eaten a fritter or two in their time. A Common Galaxias close-up. Environmental conditions in the vegetation particularly temperature and humidity are critical for successful egg development.
Retrieved 29 May In New Zealand, their conservation status is declining, mostly because of habitat loss and degradation. They mavulatus very poor climbers, however, and do not penetrate any distance inland unless the river gradient is very gradual. Retrieved 30 August Giant kokopu Galaxias argenteus. The juveniles form large shoals as they move through estuaries. They tend to be found in lower-elevation streams as unlike other species of Galaxias they cannot climb past waterfalls.
The sexes are separate and fertilisation is external. In maculatu of New Zealand, this species spawning habitat macupatus become degraded due to activities related to agriculture, urbanisation, and land use change.
Inanga (Galaxias maculatus) • Rare Species
Morphology and systematic relationships. Please donate to Arkive Help us share the wonders of the natural world.
Fishes of the Murray-Darling Basin: A guide to the freshwater fish of Victoria. The pelagic larvae eventually migrate back to shore, returning to rivers and streams the following spring as unpigmented juveniles known as whitebait.
Views Read Edit View history. For instance, in Tasmania, the adult common galaxias may only be caught using a pole of a specified maximum size 1 m. Body a translucent grey-olive to amber, with irregular greenish-grey blotches or spots on back and upper sides, belly, gill covers and eyes a bright silvery-olive to silvery-white, fins largely unpigmented. Zoological Catalogue of Australia, Vol. A Natural History and Guide. Hatching takes place maculqtus a second series of high tides again machlatus over the eggs.
The juveniles are caught as whitebait while moving galadias and are much valued as a delicacy, leading to their protection with licensing and controlled fishing seasons to preserve adult populations. Restoration of the spawning habitat helps to maintain connectivity between larvae from different rivers during marine dispersal.
X Close Image credit. Eggs develop out of water for two weeks and hatch upon the arrival of the next spring tide. Low to moderate vulnerability 30 of Adult fish typically reach sexual maturity at one year and spawning is triggered by changes in day length and temperature.
Adults are mainly found in still or slow-moving water in the lower parts of coastal streams and rivers, or around the edges of lagoons; they can tolerate a wide range of natural conditions. Similarly, the intestinal parasite Steganoderma szidati has been reported from this species’ Argentinian population.
Medium, minimum population doubling time 1. Galaxias maculatus Jenyns Feed on aquatic and terrestrial insects, and crustaceans.
IUCN Red List of Threatened Species
Adults typically migrate downstream into estuaries during high spring tides in autumn to spawn on fringing vegetation. Amphidromous – marine larvae. Journal of Fish Biology 75 3: Composition of the diet. Although no longer fished commercially in Australia, whitebait were commercially fished in Tasmania until the ‘s. The biology of a maculaatus form of the normally catadromous salmoniform fish Galaxias maculatus Jenyns.
As adults, common galaxias eat insectscrustaceansand molluscs.