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  references
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Espèces associées
Espèces pour
  
Gymnocephalus
Espèces pour
  
Percidae
- Classification -
Percinae
Percidae
Perciformes/Percoidei
Teleostei
Chordata
Animalia
Gymnocephalus
cernua
(Linnaeus
, 1758)
Ruffe
Envoyez vos
Photos
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vidéos
Pictures
|
Videos |
Images Google
Gymnocephalus cernua
Picture by
Bednarzik, J.
Gymnocephalus cernua
Male picture by
Otel, V.
Gymnocephalus cernua
Female picture by
Otel, V.
Gymnocephalus cernua
Juvenile picture by
Pinder, A.C.
Denmark country information
Common names:
Almindelig hork
,
Hork
Occurrence:
native
Salinity:
freshwater
Abundance:
common (usually seen)
|
Ref:
Frier, J.-O., 1994
Importance:
|
Ref:
Aquaculture:
|
Ref:
Regulations:
|
Ref:
Uses:
no uses
Comments:
Occurs throughout the country except Bornholm and Vendsyssel (Ref. 9945). Also Ref. 556.
National Checklist:
Country Information:
https://www.cia.gov/library/publications/resources/the-world-factbook/geos/da.html
National Fisheries Authority:
Occurrences:
Occurrences
Point map
Main Ref:
Muus, B.J. and P. Dahlstrøm, 1990
National Database:
Common names from other countries
Grémille
,
Acerina
,
Ерш обыкновенный
,
... more
Classification / Names
Noms communs
|
Synonymes
| Catalog of Fishes(
Genre
,
Espèce
) |
ITIS
|
CoL
|
WoRMS
|
Cloffa
>
Perciformes/Percoidei
(Perchs) >
Percidae
(Perches) > Percinae
Etymology:
Gymnocephalus:
Greek, gymnos = naked + Greek, kephale = head (Ref.
45335
)
.
More on author:
Linnaeus
.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce
; saumâtre
benthopélagique; pH range: 7.0 - 7.5; dH range: 8 - 12; potamodrome (Ref.
51243
);
profondeur
2 - 85 m (Ref.
121625
). Temperate; 10°C - 20°C (Ref.
13371
); 74°N - 43°N, 6°W - 169°E
Distribution
Pays
|
Zones FAO
|
Écosystèmes
|
Occurrences
|
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