Overview

Comprehensive Description

Biology

Inhabits lower and middle portions of streams and estuaries. Occurs close to the surface in estuaries. Forages in small stream estuaries, with some juveniles in lower part of streams. Feeds on drifting and terrestrial insects and zooplankton. Migrates upstream in piedmont and montane zones for spawning and spawns in riffles with heavy current on gravel bottom. Threatened due to pollution, water abstraction and river regulation. Attains a maximum size of up to about 13 cm SL (Ref. 59043).
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Distribution

Range Description

The species is known from five streams on the Crimea; Salgir, Alma, Chornya, Bel Bek and Kacha.
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Europe: streams of Crimea (Black and Azov Sea basins) in Ukraine.
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Black and Azo Sea basins: Crimea.
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Physical Description

Size

Max. size

13.0 cm SL (male/unsexed; (Ref. 59043)); max. reported age: 5 years (Ref. 59043)
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Diagnostic Description

Differs from its congeners in the Black Sea basin by the following characters: origin of anal fin about ½ -1½ scales behind last branched dorsal ray; scales on the lateral line 58-69 + 4; anal fin with 13-14½ branched rays; gill rakes 18-25; ventral keel exposed for 8-10 scales in front of anus; caudal peduncle depth 1.7-1.9 times in its length; nuptial males with few, large tubercles; and body with faint, dark midlateral stripe.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Habitat:
Lower and middle parts of streams and estuaries. In estuaries, lives close to surface. Migrates to upper reaches of streams in piedmont and montane zones. Spawns in riffles with heavy current on gravel bottom.

Biology:
Lives up to five years. Spawns for the first time at three years. Spawns in June-July. Forages in small stream estuaries and migrates upstream to spawn. Some juveniles forage in lower part of streams. Feeds on drifting and terrestrial insects and zooplankton. Regularly hybridizes with Squalius cephalus.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; brackish
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Trophic Strategy

Occurs in the lower and middle parts of streams and estuaries. Migrates to upper parts of steams in piedmont and montane zone. Forages in small streams estuaries, with some juveniles in lower part of streams.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Alburnus mentoides

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
B1ab(ii,iii,v)+2ab(ii,iii,v)

Version
3.1

Year Assessed
2008

Assessor/s
Freyhof, J. & Kottelat, M.

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

Contributor/s

Justification
The species is known from five streams on the Crimea with an extent of occurrence of less than 1,000 km (area of occupancy of spawning sites estimated to be less than 500 km). It is threatened by pollution (Salgir stream), water abstraction (Alma, Chornaya, Kacha) and river regulation (Chornaya). It's presence in Salgir needs to be confirmed, it is rare in Kacha and Chornaya streams, almost extirpated in Alma but still abundant in the Bel Bek stream.
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Population

Population
It's presence in Salgir needs to be confirmed, it is rare in Kacha and Chornaya streams, almost extirpated in Almastill but still abundant in the Bel Bek stream.

Population Trend
Unknown
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Threats

Major Threats
It is threatened by pollution (Salgir stream), water abstraction (Alma, Chornaya, Kacha) and river regulation (Chornaya). The level of drought is predicted to increase in severity due to climate change.
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Endangered (EN) (B1ab(ii,iii,v)+2ab(ii,iii,v))
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Management

Conservation Actions

Conservation Actions
No information.
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Wikipedia

Crimea shemaya

The Crimea shemaya (Alburnus mentoides) is a species of ray-finned fish in the genus Alburnus that is endemic to Crimea (Black and Azov Sea basins) in Ukraine.[1] This freshwater fish grows up to a length of 13 centimetres (5.1 in) (SL).[2]

References[edit]

  1. ^ a b Freyhof, J. & Kottelat, M. (2008). "Alburnus mentoides". IUCN Red List of Threatened Species. Version 2014.1. International Union for Conservation of Nature. Retrieved 25 July 2014. 
  2. ^ a b Froese, Rainer and Pauly, Daniel, eds. (2006). "Alburnus mentoides" in FishBase. April 2006 version.
  3. ^ "Alburnus mentoides Kessler, 1859". Biolib.cz. Retrieved 20 June 2012. 


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