Overview

Comprehensive Description

Biology

It occurs in slow-flowing, seasonal stream disappearing into the Tozman sinkhole, and has no connection with any other surface water. Today, the Tozman Stream has no connection with the main river (Ref. 89889).
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Distribution

Range Description

Turkey: Sakarya and Yenice drainages.
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Asia: Tozman Stream and Sakarya River in Turkey.
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Physical Description

Morphology

Dorsal soft rays (total): 10; Analsoft rays: 9
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Size

Max. size

11.5 cm SL (male/unsexed; (Ref. 89889))
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Diagnostic Description

Distinguished from all other congeners in Turkey by a combination of the following characters: breast completely scaled, scales approximately extending to isthmus; head length 27.2-30.0 % SL; snout shorter than postorbital distance; upper profile of head convex behind the nostril level, markedly concave at the nostrils, with rounded tip; reaching posterior margin of eye in male, reaching at midpoint of eye in female; interorbital distance 1.4-1.6 times eye diameter; body depth 21.5-24.4 % SL; pectoral fins reaching to or 1 scale anterior to pelvic-fin origin in males, 2 or 3 scales anterior to pelvic-fin origin in female; 39-42 lateral line scales; 4-6 scales between anus and anal fin origin; 6-8 scales between posterior extremity of pelvic-fin bases; 8-9 midlateral blotches; 10-14 slightly marked blotches on dorsal; intense black pigments on flank and back scales (Ref. 89889).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Small to medium sized lowland and hill streams with moderate fast flowing water, sand and gravel bottom and pool riffle structure.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2014

Assessor/s
Freyhof, J.

Reviewer/s
Ekmekçi, F., Özuluğ, M. & Smith, K.

Contributor/s

Justification
This species is widespread in Sakarya and Yenice drainages and occurs in many more then 10 independent populations. While it is expected to slowly decline in many places, this decline is not expected to be fast enough to qualify the species for Threatened or Near Threatened. It is therefore assessed as Least Concern.
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Population

Population
The species is suspected to be slowly declining due to many ongoing threats across its range.

Population Trend
Decreasing
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Threats

Major Threats
There are many threats in the area but none seems to be so strong to impact the species enough.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There is no conservation action in place and none seems to be actually needed for this species.
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Wikipedia

Gobio sakaryaensis

Gobio sakaryaensis is a species of gudgeon, a small freshwater in the Cyprinidae family. It is found only in the Tozman Stream and Sakarya River in Turkey. Freshwater subtropical demersal fish, up to 11.5 cm long.

References


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