Overview

Comprehensive Description

Biology

Forms schools along the banks just under the water surface in clean, slow flowing water with very dense aquatic vegetation.
  • Bogutskaya, N.G., F. Kucuk and E. Unlu 2000 Alburnus baliki, a new species of cyprinid fish from the Manavgat River system, Turkey. Ichthyol. Explor. Freshwat. 11(1):55-64. (Ref. 39257)
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Distribution

Range Description

Known from four streams draining to the Gulf of Antalya from Aksu east to Manavgat, Turkey. Also reported from lower Ceyhan drainage (a large distance away from the known localities) but surveys have not found the species here again, therefore this is excluded from the assessment.

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Mediterranean Sea basin, Turkey.
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Asia: known only from the Manavgat River basin in Turkey.
  • Bogutskaya, N.G., F. Kucuk and E. Unlu 2000 Alburnus baliki, a new species of cyprinid fish from the Manavgat River system, Turkey. Ichthyol. Explor. Freshwat. 11(1):55-64. (Ref. 39257)
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Physical Description

Morphology

Dorsal soft rays (total): 12; Analsoft rays: 16 - 18; Vertebrae: 36 - 38
  • Bogutskaya, N.G., F. Kucuk and E. Unlu 2000 Alburnus baliki, a new species of cyprinid fish from the Manavgat River system, Turkey. Ichthyol. Explor. Freshwat. 11(1):55-64. (Ref. 39257)
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Size

Max. size

6.1 cm SL (male/unsexed; (Ref. 39257))
  • Bogutskaya, N.G., F. Kucuk and E. Unlu 2000 Alburnus baliki, a new species of cyprinid fish from the Manavgat River system, Turkey. Ichthyol. Explor. Freshwat. 11(1):55-64. (Ref. 39257)
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology

Slowly flowing sections of streams and rivers, often with submerged vegetation.


Systems
  • Freshwater
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Environment

benthopelagic; freshwater; pH range: 6.5
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
B2ab(i,ii,iii,iv,v)

Version
3.1

Year Assessed
2014

Assessor/s
Freyhof, J.

Reviewer/s
Ekmekçi, F., Sarı, H. & Smith, K.

Contributor/s

Justification
This species is known from just four streams draining to the Gulf of Antalya from Aksu east to Manavgat, Turkey. Locally water pollution is a problem, especially in small coastal streams and in upper Aksu. The larger rivers Aksu, Köprü and Manavgat are heavily impacted by dams. In the Aksu no water comes out of the dam for some periods letting large downstream areas fall dry. Water abstraction is also a serious problem especially for the smaller streams and less rainfall due to climate change and a fast growing population and economic development increase the demands for water. Its area of occupancy (AOO) is estimated to be about 100 km²(known from 50 km of total stream length), but its extent of occurrence (EOO) is large (over 20,000 km²). It is known from four locations (based on the major threat of water abstraction and dams). It is therefore assessed as Endangered.
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Population

Population
There are no data about populations trends in this species. While the water sources in the area are strong and the situation seems not to be critical, there are many threats for freshwater biodiversity in the Gulf of Antalya. Therefore, it is suspected, that the species is very slowly declining.

Population Trend
Decreasing
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Threats

Major Threats
All the threats common in the area are affecting this species. Locally, water pollution is a problem, especially in small coastal streams and in upper Aksu. The larger rivers as Aksu, Köprü and Manavgat are heavily impacted by dams. For example in Aksu no water comes out of the dam for some periods letting large downstream areas fall dry. Water abstraction is also a serious problem especially for the smaller streams and less rainfall due to climate change and a fast growing population and economic development increase the demands for water.
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Endangered (EN) (B2ab(i,ii,iii,iv,v))
  • 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 effort for this species in place. However, Antalya Bay freshwaters have a highly endemic biodiversity which is mostly threatened and serious awareness raising and conservation planning for these species are strongly encouraged.
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Wikipedia

Alburnus baliki

The Antalya bleak (Alburnus baliki) is a species of ray-finned fish in the genus Alburnus. It is endemic to Turkey and is commonly found it schools in clear, vegetated fresh water.[2]

Description[edit]

Alburnus baliki is similar in appearance to other members of its genus, Alburnus. In addition, it has 12 dorsal rays, 16-18 anal rays and 36-38 vertebra.[3] The longest known specimen was 6.1 cm long.[3]

Distribution and habitat[edit]

Manavgat River flowing over the Manavgat Waterfall

Alburnus baliki is only known from Turkey and was discovered in 2000 in the Manavgat River system.[3] Shoals of the fish were found near the surface along the river's banks, where the water was slow contained heavy vegetation, with a pH range around 6.5.[2] This fish is known from 4 streams draining into the Gulf of Antalya, from the Aksu River in the east to the Mangat River in the west. It may also be present in the Ceyhan River. Three of the four rivers it is endemic to have been modified by hydroelectric dams and pollution.

References[edit]

  1. ^ Freyhof, J. (2014). "Alburnus baliki". IUCN Red List of Threatened Species. Version 2014.2. International Union for Conservation of Nature. Retrieved 29 August 2014. 
  2. ^ a b c Froese, Rainer and Pauly, Daniel, eds. (2006). "Alburnus baliki" in FishBase. April 2006 version.
  3. ^ a b c Bogutskaya, N.G., F. Kucuk and E. Unlu, 2000. Alburnus baliki, a new species of cyprinid fish from the Manavgat River system, Turkey. Ichthyol. Explor. Freshwat. 11(1):55-64.
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