Lepidogalaxias salamandroides, Salamanderfish

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Lepidogalaxias salamandroides Mees, 1961

Salamanderfish
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Lepidogalaxias salamandroides
Picture by Berra, T.M.

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> Lepidogalaxiiformes (Salamanderfishes) > Lepidogalaxiidae (Salamanderfishes)
Etymology: Lepidogalaxias: Greek,lepis, lepidos = scale + Greek, galaxias, ou = a kind of fish (Ref. 45335).

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

; zoet water demersaal; pH range: 3.8 - 4.5; dH range: 5 - ?; standvastig. Temperate; 17°C - 26°C (Ref. 36498); 34°S - 35°S

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Oceania: endemic to Western Australia in seasonal pools between the Blackwood and Kent rivers.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 4.3  range ? - ? cm
Max length : 7.4 cm SL mannelijk / geslacht onbekend; (Ref. 44894); 6.7 cm TL (female); common length : 4.0 cm SL mannelijk / geslacht onbekend; (Ref. 5259)

Biologie     Verklarende woordenlijst (bv. epibenthic)

Facultative air-breathing (Ref. 126274); Occurs in shallow streams, drains and temporary pools in generally acidic water around pH 4. Water typically is tea-coloured (Ref. 44894). Feeds mainly on aquatic insect larvae and small crustaceans. Spawn: late winter, early spring; internal fertilization (male with modified anal fin); female laying about 100 eggs. Rapid growth of hatchlings (reaching 2.5 cm by summer). Life cycle may be limited to 12 months. Young fish aestivates in pear-shaped burrow in mud until water returns in autumn. They have no accessory respiratory structures and cannot withstand low oxygen situations (Ref. 36499). About 25-30% of the population attains sexual maturity at the end of the first year. The breeding season coincides with heavy rains between late May and August. The lifespan typically lasts three years, but some fish persist for up to five years (Ref. 44894).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Internal fertilization is facilitated by the modified anal fin of the male. Female deposits about 100 eggs in the shallows.

Hoofdreferentie Upload your references | Referenties | Coördinator : Berra, Tim M. | Medewerkers

Berra, T.M. and G.R. Allen, 1991. Population structure and development of Lepidogalaxias salamandroides (Pisces: Salmoniformes) from western Australia. Copeia 1991(3):845-850. (Ref. 36498)

Status op de Rode Lijst van het IUCN (Ref. 126983)

  Bedreigd (EN) (B1ab(i,ii,iii,iv)+2ab(i,ii,iii,iv)); Date assessed: 09 January 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: van geen belang
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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.1   ±0.4 se; based on diet studies.
Generation time: 1.7 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec = 37).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (27 of 100).