Overview

Comprehensive Description

Biology

Occurs in swift flowing water, with stone and pebble bottom and collected together with the following species: Alburnoides bipunctatus, Alburnus cf. carinatus, Barbus niluferensis, Rhodeus amarus, Squalius cii, Vimba vimba, Cobitis puncticulata, Cobitis fahirae, and Proterorhinus semilunaris (ref. 80049).
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Distribution

Range Description

Turkey: southern tributaries of Marmara Sea from tributaries to Lake Iznik west to Menderes Rivers at Çanakkale.

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Asia: rivers draining to the southern shore of the Marmara Sea, Turkey: Nilüfer, Koca (= Kocasu; entering Lake Ulubat), Kocachay (entering Lake Manyas, a tributary of Koca or Susurluk River), Hanchay (a tributary of Gönen) and Narlica Stream in Iznik county (flowing to Lake Iznik).
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Rivers draining into the southern shore of the Marmara Sea, Turkey.
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Physical Description

Morphology

Vertebrae: 46 - 47
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Size

Max. size

35.0 cm SL (male/unsexed; (Ref. 80049))
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Diagnostic Description

This species is distinguished from its congeners in Turkey and the Aegean basin by possessing a lower lip without median lobe (vs. present) and a longer and pointed snout. It is further distinct by having the following characters (none unique to the species): medium body size (up to 35.0 cm SL); specimens over 10.0 cm SL have large and many irregular dark brown spots on the back, as well as on the flanks, but none on the head; some smaller specimens lack the dark brown spots; fleshy lips; lower lip with no median lobe but with two small notches and a squarish fleshy median pad; lateral line scales 53-62; scale rows between the lateral line and the dorsal-fin origin 11-13 and between the lateral line and the anal-fin origin 7-9; gill rakers on the first gill arch 11-14 (modally 12); the last simple ray of the dorsal fin is moderately ossified, and with 30-34 serrae on the proximal ¾ of the posterior margin; body depth 18.8-24.1 % SL at dorsal-fin origin; head length 27.0-29.8 % SL (Ref. 80049).Description: D 4 simple, 8.5 branched rays; A 3 simple and 5.5 branched rays; V 1 simple and 8 branched rays (Ref. 80049).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology

Lower part of rivers and streams with fast to moderately fast flowing water, riffle and pool structure. Inhabits also reservoirs and lakes from where it migrates to inflowing rivers to spawn.


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
The species is endemic to an area which is heavily affected by many threats but the species seems to be able to cope with these threats and it is still widespread and locally abundant. As there seem to be more then 10 independent populations (locations) and the decline is not expected to meet the NT or any threat category, the species is assessed as LC.
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Population

Population
There are no data about the population trends in this species. As there are many threats in the area, a decreasing population trend is suspected but the species still abundant and widespread.

Population Trend
Decreasing
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Threats

Major Threats
There are many threats in the area but none seems to be strong enough to really threaten this species
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There is no conservation action in place for this species and there seem to be also no actual need for such actions.
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Wikipedia

Barbus oligolepis

Barbus oligolepis is a species of cyprinid fish endemic to Turkey where it is only known from fast flowing waters with substrates of stones or pebbles. This species can reach a length of 35 centimetres (14 in) SL.[1]

Taxonomic Issue[edit]

Oliotius oligolepis (Bleeker, 1853), a species of barb from Southeast Asia has at times been placed in the genus Barbus which would render the current species invalid as a junior homonym. However, since Bleeker's oligolepis species, originally in Capoeta, is currently placed in the genus Oliotius and before that in Puntius, Battalgil's oligolepis species is available and valid.[2]

References[edit]

  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2013). "Barbus oligolepis" in FishBase. October 2013 version.
  2. ^ Barbus tauricus oligolepis, Catalog of Fishes, California Academy of Sciences


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