Golden galaxias (Galaxias auratus) fish species and information / pictures of Golden galaxias - Galaxias auratus

Golden galaxias (Galaxias auratus) fish species information

Scientific Name
Galaxias auratus

Common Name
Golden galaxias

Biology
Lives in rocky areas and vegetated margins of lakes and streams (Ref. 5259), primarily in lakes preferring still or gently flowing waters (Ref. 51290, 44894). Adults prefer the shelter provided by complex habitats such as rocky lake shores and also in-lake macrophytes beds and marsh habitats (Ref. 51290). Juveniles occur in the water column until 4-5 months of age (40 mm in length) and then move inshore seeking shelter and larger prey items (Ref. 51290). Shoaling in open water when young (Ref. 44894). Feeds on insects, insect larvae and crustaceans (Ref. 5259, 44894) and mollusks with cannibalism of eggs and juvenile fish being common (Ref. 51290, 44894). Breeds in early spring among rocks in the shallows (Ref. 44894). Most fish live for 3-4 years with some reaching over 6 years of age (Ref. 51290).

Classification

Classified By
Johnston, 1883
Class
Ray-finned fishes (Actinopterygii)
Order
Smelts (Osmeriformes)
Family
Galaxiids (Galaxiidae)

Distribution

Region
Oceania
Distribution
Oceania: known only from Central Plateau of Tasmania in Lake Sorell, Lake Crescent, a tributary of Lake Crescent at Interlaken, and Clyde River, which is the outflow of Lake Crescent.
Range
Unknown

Environment

Climate
Temperate
Water Temperature From
10 °C
Water Temperature To
28 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
benthopelagic
Environment
Freshwater; benthopelagic
Trophic Level
3.3 s.e. 0.44 Based on food items.
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
24.0 cm
Common Length
15.0 cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
Low to moderate vulnerability (30 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (tm=1-2)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated