Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি; ঈষৎ লোনা সমুদতলে ভাসমান বেনথোপেলাজিক. Temperate
Europe and Asia: Caspian basin, from Volga southward to Atrek (Iran); Aral basin in Amu Darya, Syr Darya and Chu drainages.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 105 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 1441); common length : 65.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 1441); সবের্াচ্চ প্রকাশিত ওজন : 15.0 kg (Ref. 59043)
পৃষ্ঠীয় কাঁটা (মোট ) : 4; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 8; পায়ূ কাঁটা : 2; পায়ূর নরম পাখনা্তুন্ড: 5. Diagnosed from other species of Barbus and Luciobarbus in Caspian Se basin by having the following characters: predorsal length longer than postdorsal length; dorsal fin with 8½ branched rays; 12-18 gill rakers; back between head and dorsal origin laterally compressed, forming a keel; lateral line with 52-72 (usually 60-66) scales; and lower lip thin, without median lobe or pad (Ref. 59043).
Occur in the sea, mostly close to shores and forages also in estuaries. This species is semi-anadromous and non-anadromous, rarely landlocked in reservoirs. Adults and juveniles feed on invertebrates, algae, detritus, plant material, and small fishes, while larvae prey on zooplankton and small benthic invertebrates. Spawn in lowland streams and rivers on sand-gravel bottom, usually in strong current. Undertake migration to uppermost tributaries of rivers. Non-anadromous populations begin to migrate during late summer-autumn and spawn following spring, but some enter rivers in early spring and spawn same year. Migration by non-anadromous populations takes place just before spawning to upper stretches of tributaries or spawn in lakes and reservoirs on sand to mud bottom (Ref. 59043).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
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
Harmless
Human uses
হাতিয়ার
Special reports
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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=0.00631 (0.00319 - 0.01247), b=3.02 (2.86 - 3.18), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 2.8 ±0.3 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (tm=3-7; Fec=15,000-125,000).
Fishing Vulnerability (Ref.
59153): High vulnerability (63 of 100).
