Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
সামুদ্রিক; ঈষৎ লোনা তলদেশ বিহারী. Temperate; 4°C - 20°C (Ref. 13614); 47°N - 41°N, 32°E - 42°E
Europe: Azov and northern Black Sea basins from Bulgaria to eastern Crimea; in freshwater, found only in Danube delta.
আকৃতি / ওজন / Age
পরিপক্কতা : Lm ? range ? - ? cm
Max length : 20.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 13614)
This species is distinguished from other related species in the Black Sea basin by the following characters: pelvic disc 80-100% of distance between its origin and anus; cycloid scales completely cover predorsal area and nape; pelvic disc fraenum with angular lobes, fraenum length 1/6-1/2 of its width at base; scales in midlateral series 58-70 + 2-4; snout length 1.3-1.5 times in eye diameter; first branched ray of second dorsal about as long as penultimate ray; posterior part of first dorsal without black spot (Ref. 59043).
Body shape (shape guide): fusiform / normal.
Rarely enters freshwaters (Ref. 26334). Inhabits inshore habitats, brackish lagoons, estuaries and lower part of large rivers; usually associated with rock bottom or sunken trees. Spawns at 2 years, from December to April where females can repeat spawning during a season. Feeds mostly on crustaceans (Ref. 59043).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Reshetnikov, Y.S., N.G. Bogutskaya, E.D. Vasil'eva, E.A. Dorofeeva, A.M. Naseka, O.A. Popova, K.A. Savvaitova, V.G. Sideleva and L.I. Sokolov, 1997. An annotated check-list of the freshwater fishes of Russia. J. Ichthyol. 37(9):687-736. (Ref. 26334)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
হাতিয়ার
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ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (সূত্র
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00477 - 0.02194), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (সূত্র
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (সূত্র
120179): মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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