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Alburnus chalcoides (Güldenstädt, 1772)

Danube bleak
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Alburnus chalcoides
Picture by Naseka, A.M.

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Leuciscinae
Etymology: Alburnus: From the city of Al Bura, where the fish was known (Ref. 45335).

Environment: milieu / climate zone / Mức độ sâu / distribution range Sinh thái học

; Nước ngọt; Thuộc về nước lợ Sống nổi và đáy; di cư trong nước ngọt (Ref. 51243). Temperate; 5°C - 20°C (Ref. 12468); 61°N - 38°N, 9°E - 55°E

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Bản đồ điểm | Những chỉ dẫn | Faunafri

Europe and Asia: Caspian (mostly western to southern coast, rarely found in Ural and Volga). Populations from Aral Sea basin might belong to this species (Ref. 59043). Reported from the Black Sea basin (Ref. 58342).

Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 40.0 cm TL con đực/không giới tính; (Ref. 556); common length : 20.0 cm TL con đực/không giới tính; (Ref. 1441); common length :28 cm TL (female)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Động vật có xương sống: 42 - 45. Diagnosed from its congeners in Caspian and Black Sea basin by having the following characters: anal fin origin about 1½ -2½ scales behind last branched dorsal ray; lateral line with 54-65 + 4-5 scales; anal fin rays with 13-15½ branched rays; 18-23 gill rakers; ventral keel exposed for 8-12 scales in front of anus (up to almost 80% of distance between anus and pelvic base); head length 20-24% SL; predorsal length 52-56% SL; caudal peduncle depth 1.9-2.4 times in its length; nuptial males with few, large tubercles; lacking dark midlateral stripe. Morphology is variable which has been considered to be an adaptation to different habitats, but data suggest that this is probably due to several species being confused under this species (Ref. 59043).
Body shape (shape guide): fusiform / normal.

Sinh học     Tự điển (thí dụ epibenthic)

Inhabit lower reaches of rives, coastal lakes, estuaries, and brackish areas of sea. Occur close to surface and tolerate salinities up to 14 ppt. Adults predominantly prey on planktonic crustaceans, terrestrial insects and small fish while larvae and young juveniles feed on zooplankton, algae and insect larvae. Spawn in small rivers or streams with heavy current on gravel bottom. Landlocked populations found in reservoirs spawn in reservoir tributaries (Ref. 59043). Eastern populations migrate upstream for spawning (Ref. 13696). Males assemble and wait at the spawning grounds for ripe females, which arrive later. Deposit sticky eggs which adhere on pebbles or stones. Embryonic development lasts 2-3 days, with larvae first staying among gravel for 8-11 days, then actively migrating to shallows and backwaters. Adults migrate back to sea, lakes or estuaries soon after spawning to forage. Young juvenile undertake downriver migration in autumn of same year or next spring. Due to dam constructions, almost all long-distance migrating populations lost as they were unable to reach spawning sites. Survive in small water courses and as landlocked populations in some reservoirs. Populations are expected to decline and to further decline due to expanding hydroelectric development and strong ecological impacts on Caspian sea (Ref. 59043).

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng

Males assemble and wait at the spawning grounds for ripe females, which arrive later. Deposit sticky eggs which adhere on pebbles or stones. Embryonic development lasts 2-3 days, with larvae first staying among gravel for 8-11 days, then actively migrating to shallows and backwaters. Adults migrate back to sea, lakes or estuaries soon after spawning to forage. Young juvenile undertake downriver migration in autumn of same year or next spring (Ref. 59043).

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối | Người cộng tác

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: Version 2024-2)

  Least Concern (LC) ; Date assessed: 25 February 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Các nghề cá: Tính thương mại; Nuôi trồng thủy sản: Tính thương mại
FAO - Các nghề cá: landings; Publication: search | FishSource |

Thêm thông tin

Sinh thái dinh dưỡng
Food items (preys)
Thành phần thức ăn
Thành phần thức ăn
Food rations
Các động vật ăn mồi
Sinh thái học
Sinh thái học
Home ranges
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Bổ xung
Sự phong phú
Life cycle
Sự tái sinh sản
Chín muồi sinh dục
Maturity/Gills rel.
Sự sinh sản
Đẻ trứng
Spawning aggregations
Các trứng
Egg development
Ấu trùng
Sự biến động ấu trùng
Anatomy
Vùng mang
Brain
Otolith
Physiology
Body composition
Nutrients
Thành phần ô-xy
Dạng bơi
Tốc độ bơi
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Di truyền
Genome
Di truyền
Heterozygosity
Di sản
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Estimates based on models

Phylogenetic diversity index (Tài liệu tham khảo 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00518 - 0.00733), b=3.12 (3.09 - 3.15), in cm total length, based on LWR estimates for this species (Ref. 93245).
Mức dinh dưỡng (Tài liệu tham khảo 69278):  3.4   ±0.41 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=2-5; tmax=9; K=0.10).
Fishing Vulnerability (Ref. 59153):  High vulnerability (63 of 100). 🛈
Price category (Ref. 80766):   Unknown.