Galaxias aequipinnis, East Gippsland Galaxias

Galaxias aequipinnis Raadik, 2014

East Gippsland Galaxias
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Image of Galaxias aequipinnis (East Gippsland Galaxias)
No image available for this species;
drawing shows typical species in Galaxiidae.

Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335); aequipinnis: Name from Latin 'aequalis', meaning like or same and 'pinna' for fin, referring to the almost equal size, on average, of the pectoral and pelvic fins in this species (the most equal when compared to congeners within the G. olidus complex).

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

; sötvatten bentopelagisk; ej vandrande; djupintervall 0 - 1 m (Ref. 98815). Tropical

Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri

Oceania: Australia.

Storlek / Vikt / Ålder

Könsmognad: Lm ?  range ? - ? cm
Max length : 11.0 cm FL hane/ej könsbestämd; (Ref. 98815); publicerad maxvikt: 12.90 g (Ref. 98815)

Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt) : 9 - 11; Mjukstrålar i analfenan: 11 - 12; Ryggkotor: 52 - 56. This species is distinguished from its congeners within the Galaxias olidus complex by the following characters: 8 segmented pelvic fin rays; no pyloric caecae; head length relatively long (21.6-24.5 % SL), about as long as pelvic fin to anal fin length distance; nostrils of moderate length, often just visible anterio-laterally from ventral view; mouth slightly subterminal, the lower jaw shorter than upper distinctive ‘blunt’ profile of snout; long anal fin base (10.4-12.9 % SL); short anal fin length/length of anal fin base ratio, long pelvic fins which are about 0.9 of the pectoral fin length; relatively long snout (27.2-32.0 % HL); a broadly flat dorsal midline anteriorly from above pelvic fin bases; raised lamellae rarely present on the ventral surface of paired fins, if present, weakly developed; anal fin origin usually under 0.6 distance posteriorly along dorsal fin base; no black bars along lateral line (Ref. 98815).
Cross section: oval.

Biologi     Ordlista (t.ex. epibenthic)

Facultative air-breathing in the genus (Ref. 126274); A freshwater fish not able to undertake diadromous migrations. It occurs from small to moderately large (in average 1.5-6.0 m width and 0.15-0.40 m depth), well-shaded and cool, clear to slightly tannin-stained streams, flowing through densely forested catchments, consisting of pools, glides and riffles, with smaller amounts of rapids and backwater areas. The substrate consisted predominantly of bedrock with boulder and cobble, with smaller amounts of gravel and coarse sand, and relatively large areas of silt deposits. Instream cover provided mainly by rock, vegetation overhang and timber debris, with smaller areas of aquatic vegetation, and pools averaged 0.6-0.8 m in depth. Recorded at a density of 0.10-0.28 fish/m2 and collected with the native species Anguilla australis (Shortfinned eel), Galaxias brevipinnis (Broadfinned Galaxias), Euastacus bidawalus (East Gippsland spiny crayfish), Euastacus kershawi (Gippsland spiny crayfish) and Paratya australiensis (Common freshwater shrimp). The predatory alien species Salmo trutta is present farther downstream in the Goolengook River system. Apparently spawning period is during winter to spring, but may be variable. Individuals collected in late February 2002 (late summer) were at an early stage of gonad development but in late May 1992 (end of autumn) were at an advanced stage, with males running ripe and female gonads well developed and generally in a ripe stage. The majority of fish recorded in late May were > 5.4 cm LCF (length to caudal fork), with the smallest sexually developing individual 5.48 cm LCF. Confusingly, there were three individuals also collected in late May were juveniles (3.7, 3.95 and 4.14 cm LCF), considered of 0+ age, possibly indicating a late spawning with a possible November-December hatching. One individual was found to be infected with a short, thin, white worm, coiled and pointed at both ends, from amongst fat deposits around stomach in the body cavity (Ref. 98815).

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

Huvudreferens Ladda upp dina referenser | referenser | Koordinator : Berra, Tim M. | Medarbetare

Raadik, T.A., 2014. Fifteen from one: a revision of the Galaxias olidus Günther, 1866 complex (Teleostei, Galaxiidae) in south-eastern Australia recognises three previously described taxa and describes 12 new species. Zootaxa 3898(1):001-198. (Ref. 98815)

Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))

  Critically Endangered (CR) (A3bce; B1ab(i,ii,iii,iv,v)); Date assessed: 13 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless





Mänskliga användningsområden

FAO - Publication: search | FishSource |

Ytterligare information

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Verktyg

E-bok | Fälthandbok | Längdfördelnings-verktyg | Livshistorie-verktyg | Prickkarta | Fångst-MSY |

Särskilda rapporter

Kontrollera för underhåll av akvarium | Kontrollera om det finns faktablad om arter | Kontrollera om det finns faktablad om vattenbruk

Ladda ner XML

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Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoologiskt register

Uppskattningar baserade på modeller

Index för fylogenetisk mångfald
(Ref. 82804) 		PD50 = 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).
Trofisk nivå
(Ref. 69278) 		3.2   ±0.5 se; based on size and trophs of closest relatives
Resiliens
(Ref. 120179) 		Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket
(Ref. 59153) 		Low vulnerability (20 of 100). 🛈