Galaxias aequipinnis Raadik, 2014
East Gippsland Galaxias
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | 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).
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).
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
; 新鮮な水 底生の漂泳性; 移住性ではない; 深さの範囲 0 - 1 m (Ref. 98815). Tropical
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Oceania: Australia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 11.0 cm FL オス/雌雄の選別がない; (Ref. 98815); 最大公表体重: 12.90 g (Ref. 98815)
Max length : 11.0 cm FL オス/雌雄の選別がない; (Ref. 98815); 最大公表体重: 12.90 g (Ref. 98815)
簡単な記述 検索表 | 形態学 | 形態計測学
背鰭 (合計) : 9 - 11; 臀鰭: 11 - 12; 脊つい: 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.
Cross section: oval.
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).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター : Berra, Tim M. | 協力者
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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅寸前の危機的状況 (CR) (A3bce; B1ab(i,ii,iii,iv,v)); Date assessed: 13 February 2019
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
FAO - Publication: search | FishSource |
より多くの情報
養殖生態
食料品（獲物）
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捕食動物
生態学
生態学
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成長のパラメーター
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
補充
豊度
成長のパラメーター
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
補充
豊度
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繁殖
成熟
成熟度／エラ
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泳ぐ速さ
視覚色素
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病気と寄生虫
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遺伝子の
ゲノム
遺伝子の
ヘテロ接合性
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遺伝的多様性
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モデルに基づく推定値
|
系統多様性指数 (参照 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). |
|
栄養段階 (参照 69278) |
3.2 ±0.5 se; based on size and trophs of closest relatives |
|
回復力 (参照 120179) |
高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.). |
|
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |