Carassius

Carassius
	Gable ( Carassius gibelio )
Systematics
without rank:	Otophysa
Order :	Carp-like (Cypriniformes)
Subordination :	Carp fish-like (Cyprinoidei)
Family :	Carp fish (Cyprinidae)
Subfamily :	Cyprininae
Genre :	Carassius
Scientific name
	Carassius
	Nilsson , 1822

Carassius is a genus of the carp family . Their original range is difficult to reconstruct due to repeated introduction to other regions. Today the five species are distributed almost throughout the Palearctic and can be found from Europe to the Arctic watershed of Siberia and in the temperate and warm parts of East Asia.

They are small and medium-sized fish with a shape typical of carp fish. The body is stretched and laterally compressed, and with old age an increasing height develops. A back or stomach keel is missing. The mouth is terminal and has no barbels. The long dorsal fin is supported by three to four undivided and 14 to 20 divided soft rays. The anal fin is short and has two to three undivided and five to six, rarely seven, divided soft rays. Carassius species have a row of pharyngeal teeth , each of which has four laterally flattened teeth. There are 21 to 38 scales firmly anchored in the skin along the full, straight lateral line .

species

Crucian carp ( Carassius carassius ( Linnaeus , 1758) )
Carassius cuvieri Temminck & Schlegel , 1846
Gable ( Carassius gibelio ( Bloch , 1782) ), ancestral form of the goldfish
Carassius langsdorfii Temminck & Schlegel, 1846
Carassius praecipuus Kottelat, 2017

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supporting documents

↑ ^a ^b species list on Fishbase.org (English)
↑ ^a ^b Kottelat, M. (2017): Carassius praecipuus , a dwarf new species of goldfish from the Mekong drainage in central Laos (Teleostei: Cyprinidae). Revue Suisse de Zoologie, 124 (2): 323–329.
^ ^A ^b Petru M. Bănărescu, Hans-Joachim Paepke: The Freshwater Fishes of Europe , Aula-Verlag, Wiebelsheim 2002, ISBN 3-89104-658-8 . (Volume 5. Cyprinidae 2, Part III: Carassius to Cyprinus; Gastorosteidae) pp. 1-3

[fishbase-1] species list on Fishbase.org (English)

[Kottelat-2] Kottelat, M. (2017): Carassius praecipuus , a dwarf new species of goldfish from the Mekong drainage in central Laos (Teleostei: Cyprinidae). Revue Suisse de Zoologie, 124 (2): 323–329.

[banarescu-3] A ^b Petru M. Bănărescu, Hans-Joachim Paepke: The Freshwater Fishes of Europe , Aula-Verlag, Wiebelsheim 2002, ISBN 3-89104-658-8 . (Volume 5. Cyprinidae 2, Part III: Carassius to Cyprinus; Gastorosteidae) pp. 1-3