Galaxias mcdowalli, McDowall's Galaxias

Galaxias mcdowalli Raadik, 2014

McDowall's Galaxias
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Image of Galaxias mcdowalli (McDowall\
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drawing shows typical species in Galaxiidae.

Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335)mcdowalli: Named for the late Dr Robert (Bob) Montgomery McDowall (1939-2011),.
Eponymy: Dr Robert ‘Bob’ Montgomery McDowall (1939–2011) was a distinguished New Zealand freshwater ichthyologist. [...] (Ref. 128868), visit book page.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

; zoet water benthopelagisch; standvastig; diepte 0 - 1 m (Ref. 98815). Subtropical

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Oceania: Australia.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 8.4 cm FL mannelijk / geslacht onbekend; (Ref. 98815); max. gepubliceerd gewicht: 6.00 g (Ref. 98815)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale zachte stralen (totaal) : 8 - 12; Anale zachte stralen: 11 - 12; Wervels: 54 - 56. This species is distinguished from all other species within the Galaxias olidus complex by the following characters: segmented pelvic fin rays 8; high vertebral count 55; head length about as long as pelvic fin to anal fin length distance; dorsal and anal fin are bases relatively long (9.9-13.0 and 11.0-12.5 % SL, respectively); snout long (27.0-33.7 % HL), post-orbital head length short (48.9-55.2 % HL); inter-orbital relatively wide (38.6-44.8 % HL); nostrils of moderate length and not visible from ventral view; pelvic fins moderately short (8.9-10.8 % SL); caudal peduncle relatively shallow (7.2–8.1 % SL), it is longer than length of caudal fin, the flanges moderately developed and longish, reaching to or anteriorly past distal end of adpressed anal fin rays; dorsal midline is usually quite broadly flat anteriorly from above pelvic fin bases; raised laminae on ventral surface of paired fins is sometimes evident though not strongly developed; gill rakers short and stout; no pyloric caecae; anal fin origin often under 0.53 distance posteriorly along dorsal fin base; no distinct black bars along lateral line (Ref. 98815).
Cross section: oval.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. It is the only species found within its restricted range. It is recorded from a cool, clear flowing, heavily shaded and shallow (0.5 m) freshwater river, 3-5 m wide, with a substrate of sand, silt and clay, and areas of cobble and pebble. The instream cover was provided by logs, branches and bank and vegetation overhang, and pools ranged from 1-2 m in depth. It was recorded at densities of 0.15-0.18 fish/m2 and was collected with the native species Shortfinned Eel and East Gippsland Spiny Crayfish (Ref. 98815).

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

Hoofdreferentie Upload uw referenties | Referenties | Coördinator : Berra, Tim M. | Medewerkers

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 op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Ernstig bedreigd (CR) (A3bce; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)); Date assessed: 14 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(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).
Trofisch niveau
(Ref. 69278)
3.2   ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen
(Ref. 120179)
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij
(Ref. 59153)
Low vulnerability (15 of 100). 🛈