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Galaxiiformes (Southern smelts) >
Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Paragalaxias: Greek, para = the side of + Greek, galaxias, ou = a kind of fish (Ref. 45335).
More on author: Regan.
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. Temperate
Oceania: known only from the Central Plateau of Tasmania, Australia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 7.5 cm SL オス/雌雄の選別がない; (Ref. 44894); common length : 5.5 cm SL オス/雌雄の選別がない; (Ref. 5259); 最大記録サイズ: 3.00 年 (Ref. 44894)
Facultative air-breathing in the genus (Ref. 126274); Live in the margins of lakes and streams, usually in rocky areas or around vegetation and debris. Bottom-dweller in shallows of lakes and inlet streams over rocky substrates. Often sheltering in crevices under rocks, woody debris or among aquatic plants. May also occur in deeper lacustrine waters. A nocturnally active, seldom seen species. Breed in summer (December-January), releasing demersal eggs among rocks at lake margins which hatch in two weeks. Juveniles swim in midwater feeding on plankton, and colonise the bottom after about six months. Sexual maturity is attained at the end of the first year; the maximum life span is probably about three years (Ref. 44894). Feed on insects, small crustaceans, algae and eggs of other galaxiids.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧 (EN) (A2ab); Date assessed: 12 February 2019
人間の用途
水産業: 興味がない
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5625 [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).
栄養段階 (参照
69278): 3.2 ±0.40 se; based on food items.
回復力 (参照
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (tm=1; tmax=3; Fec=39).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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