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Cypriniformes (Carps) >
Xenocyprididae (East Asian minnows)
Etymology: Hypophthalmichthys: Greek, hypo = under + Greek, ophthalmos = eye + Greek, ichthys = fish (Ref. 45335); nobilis: nobilis, meaning noble (Ref. 10294).
More on author: Richardson.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
; nước ngọt; thuộc về nước lợ sống nổi và đáy; di cư trong nước ngọt (Ref. 126106); mức độ sâu 0 - ? m (Ref. 59043). Temperate; 1°C - 38°C (Ref. 120904); 34°N - 21°N, 101°E - 123°E (Ref. 121042)
Asia: China. Introduced to numerous countries and has achieved a near global distribution. However, its breeding requirements are very specialized and stocks are maintained by artificial reproduction or continuous importation. Several countries report adverse ecological impact after introduction (Ref. 1739). Often confused with Hypophthalmichthys molitrix (Ref. 59043).
Chiều dài lúc trưởng thành đầu tiên / Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm 64.2, range 55 - 70 cm
Max length : 146 cm SL con đực/không giới tính; (Ref. 59043); common length : 60.0 cm TL con đực/không giới tính; (Ref. 2059); Khối lượng cực đại được công bố: 40.0 kg (Ref. 59043); Tuổi cực đại được báo cáo: 20 các năm (Ref. 59043)
Các tia vây lưng cứng (tổng cộng) : 3; Các vây lưng mềm (tổng cộng) : 7; Tia cứng vây hậu môn: 1 - 3; Tia mềm vây hậu môn: 12 - 14. Body with numerous scattered small black blotches. Keels extend from pelvic base to anus. Barbels absent. Posterior margin of last simple dorsal ray not serrated. Branched anal rays 13-14.5 (Ref. 13274). Differs from Hypophthalmichthys molitrix by having scaled keel from pelvic to anal, 240-300 long gill rakes, head length 27-35% SL, dark overall coloration, flank with dark, large, very irregularly shaped blotches, fin bases and inferior parts of head and belly yellowish (Ref. 59043).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Adults occur in rivers with marked water-level fluctuations, overwinters in middle and lower stretches. As bottom feeders (Ref. 6459), they feed in shallow (0.5-1.5 m deep) and warm (over 24°C) backwaters, lakes and flooded areas with slow current on zooplankton and algae (Ref. 59043) throughout its life under natural conditions (Ref. 120904). Breeding ocurrs in very deep, very turbid and warm water above 18°C (usually 22-30°C), with high current (1.1-1.9 m/s) and high oxygen concentrations. Stocked to large rivers and almost all still water bodies as lakes and ponds. In aquaculture, adults can survive brackish water (up to 7 ppt) when released into estuaries and coastal lakes. They undertake long distance upriver migration at start of a rapid flood and water-level increase (in April-July depending on locality). Spawning occurs in upper water layer or even at surface during floods. Spawning ceases if conditions change and resumes again when water level increases. After spawning, adults migrate for foraging habitats, Larvae drift downstream and settle in floodplain lakes, shallow shores and backwaters with little or no current. During autumn-winter, when temperature drops to 10°C, juveniles and adults form separate large schools and migrate downstream to deeper places in main course of river to overwinter (Ref. 59043). Marketed fresh and frozen.
Produces up to 100,000 eggs (Ref. 2059). Eggs are yellowish, transparent, and hatch after about 2 days at temperatures around 25°C while drifting downstream in the deep open-water layer (Ref. 59043).
Kottelat, M., 2001. Freshwater fishes of northern Vietnam. A preliminary check-list of the fishes known or expected to occur in northern Vietnam with comments on systematics and nomenclature. Environment and Social Development Unit, East Asia and Pacific Region. The World Bank. 123 p. (Ref. 44416)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Potential pest
Sử dụng của con người
Các nghề cá: tính thương mại cao; Nuôi trồng thủy sản: tính thương mại; cá để chơi: đúng; Bể nuôi cá: Bể cá công cộng
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Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00842 - 0.01135), b=3.10 (3.06 - 3.14), in cm total length, based on LWR estimates for this species (Ref.
93245).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 2.8 ±0.33 se; based on food items.
Thích nghi nhanh (Tài liệu tham khảo
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (tm=3-5; tmax=20; K=0.15-0.27; Fec=50,000-1 million).
Sự dễ bị tổn thương của nghề đánh cá (Ref.
59153): High vulnerability (64 of 100).
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Chất dinh dưỡng (Ref.
124155): Calcium = 15.1 [5.5, 42.3] mg/100g; Iron = 0.422 [0.206, 0.879] mg/100g; Protein = 17.1 [16.0, 18.3] %; Omega3 = 0.543 [0.287, 1.037] g/100g; Selenium = 14.3 [7.2, 28.2] μg/100g; VitaminA = 10.6 [2.8, 41.9] μg/100g; Zinc = 0.271 [0.152, 0.501] mg/100g (wet weight); based on
nutrient studies.