Overview

Comprehensive Description

Biology

Possibly based on introduced S. trutta (Ref. 4537).
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Distribution

Range Description

This species is restricted to tributaries (Sogoksu and Karagöz, near the town Pinarbasi) of River Zamanti, and a tributary of the River Seyhan in south-eastern Turkey.
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Asia: Turkey.
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Historic Range:
Turkey

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Physical Description

Size

Max. size

21.7 cm SL (male/unsexed; (Ref. 85599)); 21.8 cm SL (female)
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Lives in mountain streams. Not a migratory species.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
CR
Critically Endangered

Red List Criteria
B1ab(v)+2ab(v)

Version
3.1

Year Assessed
2006

Assessor/s
Crivelli, A.J.

Reviewer/s
Erk’akan, F. & Karatash, A. (Mediterranean Workshop, Dec. 2004)

Contributor/s

Justification
This species is known from only one population in two streams. The population is currently abundant. However, the presence of the introduced Rainbow Trout Oncorhynchus mykiss is a serious threat. Range is very small (less than 10 km²) and is projected to decline in near future as a result of larval predation from Oncorhynchus mykiss.

History
  • 1996
    Critically Endangered
  • 1994
    Indeterminate
    (Groombridge 1994)
  • 1990
    Endangered
    (IUCN 1990)
  • 1988
    Endangered
    (IUCN Conservation Monitoring Centre 1988)
  • 1986
    Endangered
    (IUCN Conservation Monitoring Centre 1986)
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Current Listing Status Summary

Status: Endangered
Date Listed: 06/02/1970
Lead Region: Foreign (Region 10) 
Where Listed: Entire


Population detail:

Population location: Entire
Listing status: E

For most current information and documents related to the conservation status and management of Salmo platycephalus , see its USFWS Species Profile

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Population

Population
The population is large, but restricted.

Population Trend
Unknown
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Threats

Major Threats
Illegal fishing using nets and the introduction of other trout species (Rainbow trout, Oncorhynchus mykiss, which is a predatory threat to larvae and a direct competitor) are the main threats. Pollution is not a threat in this case (mountainous area).
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Critically Endangered (CR) (B1ab(v)+2ab(v))
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Management

Conservation Actions

Conservation Actions
None known to be in place.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
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Wikipedia

Salmo platycephalus

Salmo platycephalus, known as the flathead trout,[1][2] Ala balik[1][3] or the Turkish trout,[1] is a type of trout, a fish in the Salmonidae family. It is endemic to south-eastern Turkey. It is known only from one population, which occupies three streams, tributaries of the Zamantı River in the Seyhan River basin.[2] The population itself is abundant, but subject to threat by habitat loss, since the range is small. Also, predation of juveniles by introduced rainbow trout may cause population decline. The species is classified as critically endangered.[3]

Genetic evidence suggests that the flathead trout may indeed be derived from introduced brown trout (Salmo trutta) and thus not be a distinct species of its own. Nevertheless it is a unique form which requires protection.[2]

References[edit]

  1. ^ a b c Froese, Rainer and Pauly, Daniel, eds. (2006). "Salmo platycephalus" in FishBase. April 2006 version.
  2. ^ a b c Tarkan, AN et al. (2008) Threatened fishes of the world: Salmo platycephalus Behnke, 1968 (Salmonidae) Environ. Biol. Fishes 81, 371-372.
  3. ^ a b Crivelli, A.J. 2005. Salmo platycephalus. 2006 IUCN Red List of Threatened Species. Downloaded on 1 October 2009.

Literature[edit]

  • Behnke, R.J. 1968. A new subgenus and species of trout, Salmo (Platysalmo) platycephalus, from south-central Turkey, with comments on the classification of the subfamily Salmoninae. Mitt. Hamburg Zool. Mus. Inst. 66: 1–15.
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