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 / kisaran kedalaman / distribution range
Ekologi
; air tawar; payau dasar (demersal); pH range: 7.0 - 7.5; dH range: 10 - ?; potamodromous (Ref. 51243); kisaran kedalaman 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 / Size / Weight / umur
Kematangan: Lm 4.2 range ? - ? cm
Max length : 18.0 cm TL jantan/; (Ref. 556); common length : 10.0 cm TL jantan/; (Ref. 556); Umur maksimum dilaporkan: 10 Tahun (Ref. 74370)
Duri punggung (Keseluruhan (total)) : 6 - 8; duri punggung lunak (Keseluruhan (total)) : 15 - 18; Duri dubur: 0; Sirip dubur lunak: 10 - 13; vertebrata, bertulang belakang: 31 - 34. Caudal fin with 13 to 14 rays (Ref. 40476).
Body shape (shape guide): fusiform / normal.
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).
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)
Status IUCN Red List (Ref. 130435: Version 2025-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: tidak ada kepentingan; umpan: occasionally
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Acuan
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).
Trophic level (Acuan
69278): 3.2 ±0.2 se; based on diet studies.
Daya lenting (Acuan
120179): sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (tm=1-3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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