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Galaxias parvus, Swamp galaxias
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Swamp galaxias
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Teleostei (teleosts) >
Galaxiiformes
(Southern smelts) >
Galaxiidae
(Galaxiids) > Galaxiinae
Etymology:
Galaxias:
Greek, galaxias, ou = a kind of fish (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Temperate; 44°S - 45°S
Oceania: southwestern Tasmania, Australia in headwaters of the Gordon River, flowing northwest, and the Huon River, flowing southeast from a small common divide.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 10.0 cm SL male/unsexed; (Ref.
44894
)
Facultative air-breathing in the genus (Ref.
126274
); Inhabits swamps, quiet pools and backwaters, either in open, shallow stretches or the vegetated margins of these areas. Found around the shelter of rocks and vegetation on the bottom, also in streams draining into lakes (Ref.
44894
). Believed to spawn in winter or spring following rains. Sexual maturity is reached after one year for males and two years for females. Fecundity is typically low; spawning females lay between 70-500 eggs in well-sheltered sites (underneath rocks). The eggs require around 50-60 days to hatch (Ref.
44894
). Feeds on aquatic insects and their larvae, also small invertebrates (Ref.
44894
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
)
Vulnerable (VU)
(D2); Date assessed:
11 February 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [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 ±0.40 se; based on food items.
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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- 20 July 2016
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