Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি; ঈষৎ লোনা তলদেশ বিহারী ; pH range: 7.0 - 7.5; dH range: 10 - 20; পোটামোড্রোমাস (Ref. 51243). Temperate; 2°C - 20°C (Ref. 1672); 73°N - 37°N, 10°W - 179°E
Eurasia: basins of Atlantic, North and Baltic Seas, Arctic and northern Pacific Ocean, from Garonne (France) eastward to Anadyr and Amur drainages and Korea; Ireland (possibly introduced), Great Britain northward to 58°N. Scandinavia and Russia northernmost extremity, Rhône drainage. Recorded from upper and middle Volga and Ural drainages, Lake Balkhash (Kazakhstan) and upper Syr-Darya drainage (Aral basin), but else identifications need verification. At least one country reports adverse ecological impact after introduction. Several species are confused under Phoxinus phoxinus.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm 5.2, range 5 - 5.8 cm
Max length : 14.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 556); common length : 7.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 556); সর্বোচ্চ উলি্ল্লখিত বয়স : 11 বৎসর (Ref. 59043)
পৃষ্ঠীয় কাঁটা (মোট ): 3; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ): 6-8; পায়ূ কাঁটা 3; পায়ূর নরম পাখনা্তুন্ড: 6 - 8; কশেরুকা : 38 - 40. Diagnosed from its congeners in Europe by having lateral line usually reaching beyond anal fin base, a midlateral row of vertically elongated blotches whose depth is about 1/3-1/2 of body depth at same position, often fused in a midlateral stripe (in preserved individuals), caudal peduncle depth 2.6-3.1 times in its length, patches of breast scales separated by unscaled area or (rarely) connected anteriorly by 1-2 rows of scales, snout length 29-34% HL ( 1.1-1.4 times eye diameter), and anal fin origin in front of base of last dorsal ray (Ref. 59043). Caudal fin with 19 rays (Ref. 2196).
Gregarious (Ref. 2196). Found in a wide range of cold and well oxygenated habitats from small, fast-flowing streams to large Nordic lowland rivers and from small upland lakes to large oligotrophic lakes. Usually occurs in association with salmonid fishes (Ref. 59043). Feeds on algae, plant debris (in rivers), mollusks, crustaceans and insects (Ref. 30578). Spawns over clean gravel areas in flowing water or on wave-washed shores of lakes. Overwinters in coarse substrate or in deep pools with low current (Ref. 59043). Migrates upstream for spawning in shallow gravel areas. Important laboratory fish, for research on sensory organs of fishes. Mean maximum age is 6 years (Ref. 41616). Locally threatened due to pollution and excessive stocking of species of Salmo (Ref. 59043).
Males and females form school separately and arrive on the spawning site at differen times. Spawn over clean gravel areas in flowing water or on wave-washed shores of lakes. Deposit eggs in shallow water on sand or gravel bottom which hatch in 4-5 days at 18°C. Females lay sticky eggs deep into clean gravel (Ref. 59043).
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
IUCN Red List Status (Ref. 130435)
Threat to humans
Potential pest (Ref. 13686)
Human uses
মৎস্য: গৌণ বাণিজ্যিক ; মৎস্যাধার / এ্যাকুয়ারিয়াম : বাণিজ্যিক; স্পশর্ী : usually
হাতিয়ার
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ইন্টারনেট সুত্র
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=0.00891 (0.00631 - 0.01259), b=3.07 (2.97 - 3.17), in cm total length, based on LWR estimates for this species (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.2 ±0.4 se; based on diet studies.
Generation time: 4.0 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
স্থিতিস্থাপক (Ref.
120179): মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (tm=1-6; tmax=13; fec=200).
Fishing Vulnerability (Ref.
59153): Low vulnerability (24 of 100).
