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Chrysichthys nigrodigitatus (Lacepède, 1803)

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

> Siluriformes (Catfishes) > Claroteidae (Claroteid catfishes) > Claroteinae
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).
More on author: Lacepède.

Issue
The species Chrysichthys furcatus Günther, 1864 is considered valid in Eschmeyer (CofF ver. Mar. 2012: Ref. 89686). It is treated here a synonym of Chrysichthys nigrodigitatus (Lacepède, 1803) following Risch (1992: Ref. 7324), Risch (2003: Ref. 57126) and Geerinckx et al. (2007: Ref. 81642).

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

; Nước ngọt gần đáy; di cư trong nước ngọt (Ref. 51243); Mức độ sâu 3 - ? m (Ref. 13851). Tropical; 22°C - 28°C (Ref. 12468); 15°N - 13°S, 16°W - 30°E

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

Africa: Senegal to Cabinda, Angola (Ref. 3236, 81642). To the north also reported from Mauritania (Ref. 55783), southwards down to the lower Congo River (Ref. 1879) and Angolan coastal rivers (Ref. 120641).

Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm ?, range 14 - ? cm
Max length : 65.0 cm SL con đực/không giới tính; (Ref. 81642)

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

Các tia vây lưng cứng (tổng cộng) : 2; Các vây lưng mềm (tổng cộng) : 6; Tia cứng vây hậu môn: 0. Diagnosis: recognized by its pointed snout, the rather small mouth, and the width of the premaxillary tooth plate (1/5-1/3.5, usually 1/4, of head length); vomerine dentition represented by a square to rectangular tooth plate which begins to develop at sizes between 60 and 70 mm standard length; palatine dentition developing at sizes over 100 mm standard length, initially as isolated teeth; second or third branched dorsal-fin ray always the longest; upper caudal-fin lobe much longer than lower lobe; gill rakers long and smooth; other characters, such as length of dorsal fin, number of branched rays in anal fin, and number of gill rakers on first gill arch, are subject to intraspecific variations; sexually mature males and (some) ripe females show considerable morphological differences; such specimens have often been labelled as Chrysichthys furcatus; maturity occurs probably at a rather advanced stage (at over 200 mm SL) and leads to the inflation of head, broadening of mouth and premaxillary tooth plate, shortening of spines and overgrowth of fin-spines by thick skin, the fins becoming more rounded, and the caudal-fin lobes sometimes becoming subequal; the body acquires an emaciated, thinned down appearance (Ref. 57126, 81642). Characters only clear in mature males in reproduction: adipose fin short, base contained 8-11 times in SL and measuring 28-64% of distance between dorsal fin and adipose fin; maxillary barbel not reaching beyond dorsal spine when extended; head swollen; skin mucous; spines thick and covered with skin (Ref. 81642).

Sinh học     Tự điển (thí dụ epibenthic)

Adults occur in shallow waters of lakes (less than 4 m), over mud and fine sand bottom. Omnivorous, feed on seeds, insects, bivalves and detritus (Ref. 13851). Feeding becomes specialized with age and size, larger fish may feed on decapods and fish (Ref. 27935).

Life cycle and mating behavior Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

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

Risch, L. and E.J. Vreven, 2007. Claroteinae. p. 607-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 74659)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 30 April 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Các nghề cá: buôn bán nhỏ; Nuôi trồng thủy sản: Tính thương mại; cá để chơi: đúng
FAO - Aquaculture systems: Sản xuất; Các nghề cá: landings; Publication: search | FishSource |

Thêm thông tin

Trophic ecology
Các loại thức ăn
Diet compositions
Food consumptions
Food rations
Các động vật ăn mồi
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Sự tái sinh sản
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Ấu trùng
Sự biến động ấu trùng
Anatomy
Gill areas
Não bộ
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Dạng bơi
Swimming speeds
Visual pigment(s)
Âm thanh của cá
Diseases / Parasites
Toxicities (LC50s)
Genetics
Di truyền
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Các tổng quan nuôi trồng thủy sản
Các giống
Ciguatera cases
Stamps, coins, misc.

Các công cụ

Special reports

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Các nguồn internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Giống, Các loài | DiscoverLife | ECOTOX | FAO - Aquaculture systems: Sản xuất; Các nghề cá: landings; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Bể cá công cộng | PubMed | Reef Life Survey | Socotra Atlas | Cây Đời sống | Wikipedia: Go, tìm | World Records Freshwater Fishing | Tạp chí Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00854 - 0.01284), b=2.98 (2.92 - 3.04), in cm total length, based on LWR estimates for this species (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  3.2   ±0.41 se; based on food items.
Thích nghi nhanh (Ref. 120179):  Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (K=0.12-0.65; Fec = 3,086-28,086).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (32 of 100).
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 119 [71, 233] mg/100g; Iron = 1.48 [0.88, 2.35] mg/100g; Protein = 16.8 [15.8, 17.9] %; Omega3 = 0.272 [0.115, 0.642] g/100g; Selenium = 87.9 [39.6, 223.6] μg/100g; VitaminA = 18.6 [7.7, 43.8] μg/100g; Zinc = 1.4 [1.0, 2.0] mg/100g (wet weight);