Australia country information

Common names: Dwarf galaxias, Dwarf minnow, Eastern dwarf galaxias
Occurrence: endemic
Salinity: freshwater
Abundance: occasional (usually not seen) | Ref: Native Fish Australia, 2003
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from W. Gippsland, Victoria to Mt. Gambier, S.A., Flinders Is. And NE Tasmania (Ref. 7300). Vulnerable in Australia and Victoria, rare and susceptible in Tasmania (Ref. 48666). Adversely affected by Perca fluviatilis, Cyprinus carpio and Gambusia holbrooki (Ref. 48787). Listed by IUCN as potentially threatened due to widespread habitat destruction by agricultural and urban development (Ref. 44894).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Allen, G.R., 1989
National Database:

Common names from other countries

Mustvööt-väikegalaks, 矮小南乳鱼, Zwerggalaxie, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxiella: Greek, galaxias, ou = a kind of fish, diminutive (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; demersal. Temperate; 10°C - 30°C (Ref. 2060); 37°S - 42°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Oceania: Australia; coastal streams of Victoria from the Mitchell River or a little to the east, west to Mount Gambier in South Australia and south to the northeastern corner of Tasmania, including Flinders Island in Bass Strait.

Length at first maturity / Size / Weight / Age

Maturity: L_m 2.4 range ? - ? cm
Max length : 4.8 cm SL male/unsexed; (Ref. 44894); common length : 3.0 cm SL male/unsexed; (Ref. 5259); max. reported age: 1.00 years (Ref. 44894)

Facultative air-breathing (Ref. 126274); Frequently found among vegetation along the edge of still or slow-running waters like swamps, drainage ditches and backwaters of creeks. Adults live in both ephemeral and permanent habitats. A short-lived fish, reaching maturity in the first year of life and perishing shortly after spawning. Fish occupying ephemeral water possibly aestivate or shelter in crayfish burrows when surface water evaporates during summer (Ref. 44894). Probably an annual species. Spawn from July to October. Like its southwestern relative G. munda, this species is also a multiple spawner (Ref. 44894). Females deposit a few eggs per day on leaf litter. Eggs hatch after 10-17 days at 16°-21°C. Scanty information on diet: captive specimens eat small invertebrates and filamentous algae.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Berra, Tim M. | Collaborators

Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)

IUCN Red List Status (Ref. 130435)

Endangered (EN) (B2ab(i,ii,iii,iv)); Date assessed: 13 February 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00490 (0.00205 - 0.01170), b=3.12 (2.91 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.32 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=1;tm=1;Fec=66).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Galaxiella pusilla (Mack, 1936)