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Ctenopharyngodon idella (Valenciennes, 1844)

Grass carp
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Ctenopharyngodon idella
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United States (contiguous states) country information

Common names: Grass carp, White amur
Occurrence: introduced
Salinity: freshwater
Abundance: occasional (usually not seen) | Ref: Page, L.M. and B.M. Burr, 2011
Importance: commercial | Ref: Missouri Department of Conservation, 2008
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Introduced to Arkansas and made numerous interstate stockings that quickly spread into 35-40 states (Ref. 10294). Has been reported to occur in 45 states where it competes for food with invertebrates (e.g. crayfish) and other species, causes significant changes in macrophyte, phytoplankton and invertebrate communities, interferes with the reproduction of other fishes, decreases available refugia for other fishes, and so on (Ref. 45864). A popular fish sold in live fish markets. Found in 3 out of 6 live fish markets near the Lakes Erie and Ontario (Ref. 53249). Uncommon but its population is increasing in the lower Mississippi River. Found in lakes, ponds, pools, and backwaters of large rivers. Introduced to control aquatic weed problems in lakes and ponds. Its introduction has been proven to be more costly than beneficial as many fishes, waterfowl and other native species depend on aquatic vegetation (Ref. 86798). Also Ref. 1739.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Xenocyprididae (East Asian minnows)
Etymology: Ctenopharyngodon: Greek, kteis, ktenos = comb + Greek, pharyngx = pharynx + greek, odous = teeth (Ref. 45335);  idella: Cteno=comb; pharynx=throat; odon=tooth (in reference to its comblike pharyngeal teeth); and idella: presumably derived from the Greek idios, distinctive or peculiar (Ref. 79012).
  More on author: Valenciennes.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser; brackwasser benthopelagisch; potamodrom (Ref. 51243); tiefenbereich 0 - 30 m (Ref. 6898).   Subtropical; 0°C - 35°C (Ref. 52059); 50°N - 23°N, 100°E - 142°E (Ref. 48)

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Asia: Eastern China and Russia (Ref. 48) in eastern Siberia, Amur River system (Ref. 1441). Widely transported around the world (Ref. 7248). Persists only in Europe by stocking (Ref. 59043). Introductions often brought with it the parasitic tapeworm Bothriocephalus opsarichthydis (synonym of B. acheilognathi) (Ref. 12217). Several countries report adverse ecological impact after introduction.

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm 68.2, range 58 - 79.2 cm
Max length : 150 cm TL Männchen/unbestimmt; (Ref. 30578); common length : 10.7 cm SL Männchen/unbestimmt; (Ref. 35840); max. veröff. Gewicht: 45.0 kg (Ref. 52193); max. veröff. Alter: 21 Jahre (Ref. 48)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 0; Rückenflossenweichstrahlen (insgesamt): 10-11; Afterflossenstacheln 0; Afterflossenweichstrahlen: 10 - 14. Diagnosis: No barbels; snout very short, its length less than or equal to eye diameter; postorbital length more than half head length (Ref. 4967). 18 soft rays for caudal fin (Ref. 40476). Diagnosed from rather similar species Mylopharyngodon piceus by having the following characters: body olive to brassy green above, silvery white to yellow below; body cylindrical; pharyngeal teeth laterally compressed, serrated, with a groove along grinding surface, usually in two rows, 2,5-4,2 (Ref. 59043).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Adults occur in lakes, ponds, pools and backwaters of large rivers (Ref. 5723), preferring large, slow-flowing or standing water bodies with vegetation (Ref. 52193). Tolerant of a wide range of temperatures from 0° to 38°C, and salinities to as much as 10 ppt and oxygen levels down to 0.5 ppm (Ref. 52193). It feeds on higher aquatic plants and submerged grasses; takes also detritus, insects and other invertebrates. One of the world's most important aquaculture species and also used for weed control in rivers, fish ponds and reservoirs (Ref. 9987). Spawn on riverbeds with very strong current (Ref. 30578). Utilized also fresh and eaten steamed, pan-fried, broiled and baked (Ref. 9987). Considered as a pest in most countries because of the damages made to submerged vegetation (Ref. 43281).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Spawns in gravel bottomed areas of rivers (Ref. 48). Eggs are pelagic and hatch while drifting downstream in 2-3 days (Ref. 59043).

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

Shireman, J.V. and C.R. Smith, 1983. Synopsis of biological data on the grass carp, Ctenopharyngodon idella (Cuvier and Valenciennes, 1884). FAO Fish. Synop. No.135, 86 p. (Ref. 48)

IUCN Rote Liste Status (Ref. 130435)

  nicht bedroht (LC) ; Date assessed: 30 March 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Potential pest




Nutzung durch Menschen

Fischereien: weniger kommerziell; Aquakultur: kommerziell; Sportfisch: ja
FAO(Aquakultur: production, Artbeschreibung; Fischereien: production; publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00807 - 0.01079), b=3.08 (3.04 - 3.12), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  2.0   ±0.00 se; based on food items.
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (K=0.13-0.19; tm=2-10; tmax=21; Fec=50,000).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (69 of 100).
Preiskategorie (Ref. 80766):   Unknown.