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Galaxias supremus Raadik, 2014

Kosciuszko Galaxias
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Image of Galaxias supremus (Kosciuszko Galaxias)
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drawing shows typical species in Galaxiidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335)supremus: Name from Latin 'supremus', meaning highest, uppermost, referring to this species being found at the highest elevation of all the Galaxiidae, at over 2000 m asl on Mount Kosciuszko, Australia’s highest mountain.

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性; 非迁移的; 深度上下限 0 - 1 m (Ref. 98815).

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Oceania: Australia.

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 9.6 cm FL 雄鱼/尚未辨别雌雄; (Ref. 98815); 最大体重: 8.00 g (Ref. 98815)

简单描述 检索表 | 型态特徵 | 形态测量图

背的软条 (总数) : 9 - 11; 臀鳍软条: 10 - 12; 脊椎骨: 52 - 58. This species is distinguished from its congeners within the Galaxias olidus complex by the following characters: pelvic fin with 8 segmented rays; mean vertebral count very high 57, with broad range (52-59); distinct subterminal mouth; dorsal, anal and pelvic fin origins are set far back along trunk (70.4-75.1, 74.8-80.2 and 49.7-55.6 % SL respectively); distance between pectoral and pelvic fin bases is long (27.8-35.7 % SL); body depth shallow (8.4-12.4 % SL), much greater through pectoral fin base (11.8-16.4 % SL) than that through vent; caudal peduncle is very short and shallow (10.0-12.7 and 6.3-8.9 SL respectively); caudal fin much longer (120 %) than caudal peduncle; snout long (26.7-34.9 % HL); eye small (13.1-20.7 % HL); nostrils short and not visible from ventral view; anal fin base short (8.7-10.9 % SL); dorsal and anal fins short (12.6-15.9 and 13.1-15.9 % SL respectively); dorsal midline usually flattened anteriorly from above or slightly posterior to pectoral fin bases; posterior extent of mouth about 0.8 eye diameter below ventral margin of eye; usually 2, occasionally 1; pyloric caecae of moderate length (4.6 % SL); gill rakers are short to moderately long; anal fin origin usually under 0.85 distance posteriorly along dorsal fin base (greatest setback in all members of the species complex); no distinct black bars along lateral line though, very occasionally, dark patches on dorsal midline may have a very small, black bar in the centre; and, distinctive, mottled colour pattern (Ref. 98815).

生物学特性     字汇 (例如 epibenthic)

Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. Collected from cold and clear water in small flowing creeks (0.6-1.1 m average width, 0.1-0.2 m average depth, 0.5-0.6 m maximum depth) and from an on-stream lake (Blue Lake). All sites during winter are covered by snow and ice for an extended period of time. Substrate in the creeks consisted of bedrock, boulder, cobble, gravel and sand while the lake with cobble, pebble, gravel and silt.The fish is collected among rock, undercut banks and overhanging grasses in the creeks, mainly from pools. In Blue Lake, collected among small cobbles and from within 2 m of the shoreline (location and habitat in deeper water unknown). All sites without emergent or submerged aquatic vegetation or overhead shading. Collected at a density of 4.5 fish/m2 in Carruthers Creek, 2.5 fish/m2 along the edges of Blue Lake, and 1.5 fish/m2 in an inflowing tributary to Blue Lake. It is the only native fish species so far recorded from within its range, although Galaxias olidus is presumed to be present nearby. It is collected in Carruthers Creek with an unidentified native spiny crayfish Euastacus sp. (possibly E. rieki) (Ref. 98815).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 : Berra, Tim M. | 合作者

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)

世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)

  极度濒危 (CR) (A3bce; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)); Date assessed: 13 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 





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FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
营养阶层 (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).