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> Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335).
More on author: Jenyns.
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335).
More on author: Jenyns.
Taxonomic Remarks
zzzAT STOCKS Galaxias maculatus has the most disjunct distribution of any freshwater species. This distribution is best explained by dispersal of whitebait larval stage throughout the sea (Berra et al. 1996). See McDowall (1971b) for a detailed description.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海; 新鮮な水; 汽水性の 底生の漂泳性; 降流性の (Ref. 138269). Temperate; 10°C - 22°C (Ref. 2060); 27°S - 56°S, 112°W - 56°W
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 (including Tasmania), Lord Howe Island, New Zealand and the Chatham Islands. South America: Ranges from along the Chilean side of the Andes near Valparaiso to the southern extremity of the island chain southeast of Tierra del Fuego. Also on the eastern side of the Andes in Argentina in isolated lakes (Meliquina, Traful, Nahuel Huapi, Gutierrez, and Pellegrini) which drain into the Atlantic Ocean via the Negro River. It occurs on Falkland Islands.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 19.0 cm SL オス/雌雄の選別がない; (Ref. 44894); common length : 10.0 cm TL オス/雌雄の選別がない; (Ref. 5259)
Max length : 19.0 cm SL オス/雌雄の選別がない; (Ref. 44894); common length : 10.0 cm TL オス/雌雄の選別がない; (Ref. 5259)
簡単な記述 検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 10 - 12; 肛門の骨: 0; 臀鰭: 15 - 17.
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Facultative air-breathing (Ref. 126274); Adults occur in a wide variety of habitat, but mostly in still or slow-flowing waters, mainly in streams, rivers and lakes within a short distance of the sea. They can survive in salinities up to 50 ppt. They feed on aquatic and terrestrial insects, and crustaceans. Adults typically migrate downstream into estuaries during high spring tides in autumn to spawn on fringing vegetation. Spawning does not occur beyond the river estuaries, making this species 'only marginally catadromous' (Ref. 46888). Many perish after spawning but some survive another year. Eggs develop out of water for two weeks and hatch upon the arrival of the next spring tide. Newly hatched larvae spend their first 5-6 months at sea before returning to fresh shoals of whitebait during spring. An important component of whitebait fisheries throughout the Southern Hemisphere (Ref. 44894). Utilized fresh and eaten fried (Ref. 9988, 44894).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
For diadromous populations: deposit eggs on dense terrestrial vegetation that is flooded by the high tide. The eggs develop out of water in humid condition during the next 2 weeks. Hatching takes place when a second series of high tides again wash over the eggs. For landlocked population: fish migrate up to the tributary streams during floods. Deposit eggs on the flooded grassy banks and complete their development after the water level subsides. Hatching occurs during subsequent floods.
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
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 商業; ゲームフィッシュ: はい; 餌: usually
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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=0.00501 (0.00243 - 0.01032), b=3.16 (2.97 - 3.35), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (参照 69278): 3.2 ±0.2 se; based on diet studies.
回復力 (参照 120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Fec=175).
栄養素 (Ref. 124155): Calcium = 54 [29, 145] mg/100g; Iron = 0.34 [0.18, 0.78] mg/100g; Protein = 14.9 [12.6, 17.1] %; Omega3 = 0.495 [0.193, 1.245] g/100g; Selenium = 7.4 [2.8, 17.1] μg/100g; VitaminA = 35.1 [10.5, 122.9] μg/100g; Zinc = 1.21 [0.76, 1.87] mg/100g (wet weight);