Galaxiella toourtkoourt Coleman & Raadik, 2015

Little galaxias
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Galaxiella toourtkoourt
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 輻鰭魚綱 (條鰭魚) > Osmeriformes (Smelts) 胡瓜魚目 (Smelts) > Galaxiidae (Galaxiids) 南乳魚科 (Galaxiids) > Galaxiinae
Etymology: Galaxiella: Greek, galaxias, ou = a kind of fish, diminutive (Ref. 45335);  toourtkoourt: The specific name is derived from the Australian indigenous language groups Tjapwurrung, Korn Kopan noot, and Peekwurrung, meaning 'little fish in freshwater'.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水; 半鹹淡水 居於水底的; pH range: 5.3 - 9.3; 非遷移的.    5°C - 27°C (Ref. 104902)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Oceania: southeastern mainland Australia from the upper Barwon River system near Barwon Downs, Victoria, west to the Cortina Lakes, near the Coorong, South Australia.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 3.4 cm TL 雄魚/尚未辨別雌雄; (Ref. 104902); 4.2 cm TL (female)

簡短描述 型態特徵 | 形態測量圖

背的軟條 (總數): 5-8; 臀鰭軟條: 7 - 10; 脊椎骨: 34 - 38. Galaxiella toourtkoourt can be diagnosed from other congeners by following characters: caudal fin rays usually 13 (12-15); anal fin rays usually 8 (7-10); pectoral fin rays usually 12 (8-13); usually 36 (34-38) vertebrae; and 7 laterosensory pores in the preopercular-supramaxillary series. Adults very small (usually 2.06-3.06 cm SL in females; 1.67-2.40 cm SL in males); short caudal peduncle usually 19.6-21.9 % SL (17.2-23.8 % SL in females; 17.9-24.4 % SL in males); origin of dorsal fin more or less in line with anal fin (particularly females) with horizontal distance between dorsal fin and anal fin origins usually 0.0-2.7 % SL (2.5-2.8 in females; 2.6-3.9 in males). Adults possess three longitudinal black stripes (easier to discern in adult males) and reduced markings on ventral surface (typically two to three black blotches at isthmus) (Ref. 104902).

生物學特性     字彙 (例如 epibenthic)

Occurs in swamps, wetlands, shallow lakes, billabongs, small creeks and artificial earthen drains at low elevation (mean 100 m above sea level, typically 22-176 m above sea level). Inhabits mostly shallow areas (mean maximum depth 1.1 m, typically 0.5-2.0 m), with still to low water velocities (or often backwaters in faster flowing conditions) and partial shading (mean 27 %, typically 5-50 % surface cover). Occasionally found in inland with slightly saline waters. Water quality measurements at the time of collection indicate this species can thrive in a broad range of conditions: water temperatures 5.2-26.9 °C; dissolved oxygen levels of 20-263 % saturation; pH of 5.3-9.3; water electrical conductivity of 94-13,620 ?S/cm and turbidity of 1-96 NTU . Usually collected together with other native fish species, particularly Nannoperca australis (65 % frequency), Galaxias maculatus (12 % frequency), and burrowing crayfish (e.g. Engaeus spp., Geocharax spp.) (18 % frequency). Often found with introduced fish species Gambusia holbrooki (Ref. 104902).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 : Berra, Tim M. | 合作者

Coleman, R.A., A.A. Hoffmann and T.A. Raadik, 2015. A review of Galaxiella pusilla (Mack) (Teleostei: Galaxiidae) in south-eastern Australia with a description of a new species. Zootaxa 4021(2):243-281. (Ref. 104902)

IUCN 瀕危狀態 (Ref. 119314)

  未評估 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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國家
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Stocks
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食物相
食物消耗量
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新陳代謝
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生態毒物學
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產卵群集
孕卵數

卵發育
年龄/大小
成長
長度-重量
長度-長度
長度-頻率
形態測量圖
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仔魚
稚魚動力學
入添量
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參考文獻
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遺傳學
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Stamps, Coins Misc.
聲音
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速度
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Otoliths
腦重體重比
眼睛色素

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網路資源

Aquatic Commons | BHL | Cloffa | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(基因組, 核甘) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | 樹狀分類階層 | Wikipedia(, 搜尋) | World Records Freshwater Fishing | 動物學的記錄

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.3 se; Based on size and trophs of closest relatives
回復力 (Ref. 69278):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
瀕危性 (Ref. 59153):  Low vulnerability (10 of 100) .