Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة القاع. Temperate; 41°N - 40°N, 44°E - 46°E
Former USSR: Armenia, Lake Sevan.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 104 cm TL ذكر/ مختلط الجنس; (Ref. 593); common length : 33.0 cm TL ذكر/ مختلط الجنس; (Ref. 593); أعلا وزن تم نشرة: 17.0 kg (Ref. 593)
The adults spawn in the lake proper at a depth range of 0.5 to 3 m, over fine gravel. Two spawning stocks are known: one spawns in the northwestern corner of the lake from the beginning of November till the end of December; the other spawns at the southeastern corner, from the middle or the end of January till the end of March. This fish approaches the coast twice a year: from April till July and from October till December. In mid winter and at the end of summer, it leaves the coasts to stay at greater depth. Adults feed exclusively on sand hoppers (Amphipoda) (Ref. 593).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Needs better reference.
Berg, L.S., 1962. Freshwater fishes of the U.S.S.R. and adjacent countries. volume 1, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1948). (Ref. 593)
IUCN Red List Status (Ref. 130435: Version 2024-2)
استخدامات بشرية
مصائد: تجاري; لعبة سمكه: نعم
أدوات
تقارير خاصة
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مصادر علي الأنترنت
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=0.01047 (0.00480 - 0.02286), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.3 ±0.53 se; based on food items.
المرونه (Ref.
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (Assuming tm=3-4).
Fishing Vulnerability (Ref.
59153): High vulnerability (62 of 100).
