Spotted mountain trout (Galaxias truttaceus)

Scientific name: Galaxias truttaceus Valenciennes, 1846

Spotted mountain trout (Galaxias truttaceus)

The Spotted mountain trout (Galaxias truttaceus) is a freshwater fish of the family Galaxiidae. In the aquarium it needs water at 6–20°C (43–68°F). Native range: Oceania, widely separated populations in southeastern and southwestern Australia.

Spotted mountain trout care at a glance

Temperature
6–20°C (43–68°F)

Biology

Occurs in still or slow-flowing waters at low elevations close to the sea; most abundant along shore margins in rocky areas. Found around plants, rocks or logs on the margins of still or flowing rivers, streams and lakes. The species has a marine juvenile stage, indicative of a diadromous life cycle. Spawning takes place from autumn to winter, among aquatic vegetation. Newly hatched larvae drift downcurrent and out to sea where they spend their first few months, eventually returning to fresh water during spring among annual whitebait migrations. In lacustrine and other landlocked populations, adults move upstream into feeder streams to spawn. The larvae are then swept downstream into lakes. Feeds mainly on aquatic and terrestrial insects.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Galaxias truttaceus
Family
Galaxiidae (Galaxiids)
Order
Osmeriformes (Smelts)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
20.0
Common length
10.0
Environment
Marine; freshwater; brackish; demersal; amphidromous
Climate
Temperate
Distribution
Oceania: widely separated populations in southeastern and southwestern Australia.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1,175)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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