رده بندی / Names
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Galaxiiformes (Southern smelts) >
Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335); tantangara: Named fro its type locality, a small alpine stream, a tributary of the upper Murrumbidgee River draining from Mount Tantangara; noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
; آب شيرين موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.; غير مهاجر; تغييرات عمق 0 - 1 m (Ref. 98815). Subtropical
Oceania: Australia.
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 10.3 cm FL جنس نر / بدون خواص جنسي; (Ref. 98815); بيشينه وزن گزارش شده: 13.00 g (Ref. 98815)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل) : 8 - 11; شعاع نرم باله مخرجي: 10 - 12; مهره ها: 53 - 56. This species is distinguished from its congeners within the Galaxias olidus complex by the following characters: low mean total gill raker count of 10; body stocky and deep through vent and pectoral fin base (12.6-15.6 and 14.9-17.9 % SL); deep caudal peduncle (8.5-10.2 % SL); head obtuse to slightly bulbous in lateral profile and moderately deep (41.4-48.2 % HL) but wide (63.4-72.8 % HL); gape wide (40.2-51.0 % HL and 59.6-72.2 % HW); eye profiles often not visible laterally from ventral view; nostrils are short, not visible from ventral view; caudal fin weakly emarginate to truncate, about as long or slightly longer than caudal peduncle, vertical width of expanded rays usually equal to body depth through the pectoral fin base; caudal peduncle flanges are long, reaching more than half distance to anal fin base; anal fin long (16.3 % SL); most posterior extent of mouth 0.8 eye diameter below ventral margin of eye; dorsal midline is usually flattened anteriorly from above or slightly posterior to pectoral fin bases; no raised lamellae from ventral surface of rays of paired fins; anal fin origin usually under 0.73 distance posteriorly along dorsal fin base; pyloric caeca usually 2, occasionally 1, relatively thin and long (4.7 % SL); gill rakers are short to very short; no distinct black bars along lateral line (Ref. 98815).
Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. Recorded from a small (0.8 m average width and 0.1 m in average depth), cold, clear and fast flowing alpine creek, flowing through an open forest of Eucalyptus, low shrubs and tussock grass, and which is often snow covered during winter. Flow consisted predominantly of riffle and glide, with smaller amounts of cascades. Substrate composed of bedrock, boulder, and cobble, with smaller amounts of pebble and gravel, and sections of silt. Instream cover provided mainly by rock and by bank and vegetation overhang, and pools averaged 0.3 m in depth. Recorded at a density of 1.8 fish/m2 and the only native fish so far recorded from within its range (Ref. 98815).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-2)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00206 - 0.01165), 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 ±0.4 se; based on size and trophs of closest relatives
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
