Common names from other countries
分類 / Names
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Perciformes/Cottoidei (Sculpins) >
Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335); rhotheus: rhotheus -- rushing of the torrent, referring to habitat (Ref. 1998).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の. Temperate; 52°N - 42°N
North America: upper Fraser River drainage in British Columbia in Canada to Nehalem River in Oregon, USA (including Columbia River drainage of British Columbia in Canada, and Washington, Idaho, Montana and Oregon in the USA).
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 15.5 cm TL オス/雌雄の選別がない; (Ref. 1998); common length : 6.8 cm TL オス/雌雄の選別がない; (Ref. 12193)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 7 - 9; 背鰭 (合計) : 15 - 18; 臀鰭: 11 - 14.
Inhabits rubble and gravel riffles of rivers and rocky lake shores. Individuals up to 5 cm feed on planktonic crustaceans and aquatic insect larvae especially that of midges and mayflies (Ref. 1998). Larger sculpins feed on minnows and other fishes (Ref. 1998). Possibly spawns in June (Ref. 1998).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
CITES (Ref. 128078)
Not Evaluated
Human uses
用具
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
栄養段階 (Ref.
69278): 3.4 ±0.45 se; based on food items.
回復力 (Ref.
120179): 手段, 1.4年~4.4年の倍増期間の最小個体群 (Fec=448).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).