分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Issue
Junior synonym Cottus jaxartensis is a valid species according to Sideleva, 2021 (Ref. 129291) and Cottus nudus is a primary homonyn and permanently invalid (include in Ref. 129291 Quote).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水; 汽水性の 底生の; pH range: 7.0 - 7.5; dH range: 10 - ?; potamodromous (Ref. 51243); 深さの範囲 2 - 2 m (Ref. 58018). Subtropical; 1°C - 16°C (Ref. 45166); 70°N - 40°N, 6°W - 60°E
Europe: North Baltic in Scandinavia south to stream Maurine in southwesternmost of corner of Baltic basin (Germany); lower reaches of streams and rivers and along coast of Sweden, Finland, Russia southwest to Estonia; Danube (except upper tributaries Save and Arges), Elbe, Ems, Weser and Rhône drainages; tributaries of upper Rhine downriver (northward) to about Mannheim; a few of uppermost tributaries of River Tevere, central Italy; Adriatic drainages from Potenza in Italy to Zrmanja in Croatia, except Timavo spring. Locally introduced in Scheldt drainage in Belgium.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 4.2 range ? - ? cm
Max length : 18.0 cm TL オス/雌雄の選別がない; (Ref. 556); common length : 10.0 cm TL オス/雌雄の選別がない; (Ref. 556); 最大記録サイズ: 10 年 (Ref. 74370)
背面の脊椎 (合計) : 6 - 8; 背鰭 (合計) : 15 - 18; 肛門の骨: 0; 臀鰭: 10 - 13; 脊つい: 31 - 34. Caudal fin with 13 to 14 rays (Ref. 40476).
Occurs in cold, clear and fast-flowing water of small stream to medium-sized rivers as well as on gravel or rocky shores of cold lakes and in slightly brackish waters along eastern coast of Baltic coast (Ref. 59043). Feeds on small bottom invertebrates, mainly insects, crustaceans. Pink to yellow eggs are found in clumps attached to undersides of large stones (Ref. 41678). Contrary to statements in older literature, eggs and larvae of fishes are not a common food item (Ref. 45167).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Spawns once a year for several years in low productivity streams, but exhibits multiple spawning within a season in high productivity environments (Ref. 40290, 40754). Male protects several batches of eggs--deposited below a stone--for about 3 weeks. Larvae are not guarded and may occasionally been eaten (Ref. 45166). Also Ref. 26506.
Freyhof, J., M. Kottelat and A. Nolte, 2005. Taxonomic diversity of European Cottus with description of eight new species (Teleostei: Cottidae). Ichthyol. Explor. Freshwat. 16(2):107-172. (Ref. 55856)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-1)
Human uses
水産業: 興味がない; 餌: occasionally
用具
特記事項
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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=0.00933 (0.00553 - 0.01575), b=3.18 (3.03 - 3.33), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (Ref.
69278): 3.2 ±0.2 se; based on diet studies.
回復力 (Ref.
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (tm=1-3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
