Gymnocephalus schraetser

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	PERCIFORMES	PERCIDAE

Scientific Name:

Gymnocephalus schraetser

Species Authority:

(Linnaeus, 1758)

Common Name/s:

English

–

Schraetzer, Striped Ruffe

Synonym/s:

Gymnocephalus schraetzer (Linnaeus, 1758)

Assessment Information [top]

Red List Category & Criteria:

Least Concern ver 3.1

Year Published:

2008

Assessor/s:

Freyhof, J. & Kottelat, M.

Reviewer/s:

Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit)

Justification:
A widespread species with no known major widespread threats.

History:

1996

–

Vulnerable

Geographic Range [top]

Range Description:	Danube drainage.
Countries:	Native: Austria; Bosnia and Herzegovina; Bulgaria; Croatia; Germany; Hungary; Moldova; Romania; Serbia; Slovakia; Slovenia; Ukraine
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Abundant.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	Habitat: Open sand and mud bottom of large rivers with moderate current. Biology: Gregarious, nocturnal. Lives up to 15 years. Spawns for the first time at 2-3 years, 120-160 mm SL. Spawns in April-June. Usually, a single female spawns with several males. Females attach eggs to stones. Larvae are benthic. Usually crepuscular but feeds also during daytime. Feeds on small invertebrates, especially molluscs.
Systems:	Freshwater

Habitat and Ecology:

Habitat:
Open sand and mud bottom of large rivers with moderate current.

Biology:
Gregarious, nocturnal. Lives up to 15 years. Spawns for the first time at 2-3 years, 120-160 mm SL. Spawns in April-June. Usually, a single female spawns with several males. Females attach eggs to stones. Larvae are benthic. Usually crepuscular but feeds also during daytime. Feeds on small invertebrates, especially molluscs.

Systems:

Freshwater

Threats [top]

Major Threat(s):	No major threats known.

Major Threat(s):

No major threats known.

Conservation Actions [top]

Conservation Actions:	No information.

Conservation Actions:

No information.

Bibliography [top]

	Banarescu, P. 1964. Fauna Republicii Populare Romîne. Volumul XIII. Pisces - Osteichthyes (pesti ganoizi si osisi). Editura Academiei Republicii Populare Romîne, Bucuresti. IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: http://www.iucnredlist.org. (Accessed: 5 October 2008). Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland. Zauner, G. 1996. Ökologische Studien an Perciden der oberen Donau.

Banarescu, P. 1964. Fauna Republicii Populare Romîne. Volumul XIII. Pisces - Osteichthyes (pesti ganoizi si osisi). Editura Academiei Republicii Populare Romîne, Bucuresti.

IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: http://www.iucnredlist.org. (Accessed: 5 October 2008).

Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland.

Zauner, G. 1996. Ökologische Studien an Perciden der oberen Donau.

Citation:	Freyhof, J. & Kottelat, M. 2008. Gymnocephalus schraetser. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012.
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