Knipowitschia mrakovcici 

Scope: Global & Europe
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Gobiidae

Scientific Name: Knipowitschia mrakovcici Miller, 2009
Knipowitschia sp. nov. 'Visovac' In Kottelat & Freyhof, 2007
Taxonomic Notes: This species was listed as Knipowitschia sp. nov. ‘Visovac’ by Kottelat and Freyhof, 2007. It was also mentioned as "Knipowitschia mrakovcici" by Mrakovcic et al. (1994), which was not a valid name. It has since been formally named Knipowitschia mrakovcici Miller, 2009.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(v) ver 3.1
Year Published: 2011
Date Assessed: 2010-11-05
Assessor(s): Freyhof, J.
Reviewer(s): Smith, K. & Kottelat, M.
Contributor(s): Kottelat, M.
This species has a very restricted range, Visovac Lake in the lower Krka drainage (extent of occurrence estimated to be 20 km²). It is currently experiencing a population decline, but the reasons for this are unknown. Pollution from two towns (Knin and Drnis) could be a cause. A study is currently under way to determine the threats and conservation measures for the species.

For the European Union 27 assessment, this species is recorded as Not Applicable (NA); it is not found within the European Union.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in Lake Visovac, in the lower part of the Krka River.
Countries occurrence:
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species is declining massively (Mustafic pers. comm.).
Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This is a lacustrine species.

Threats [top]

Major Threat(s): The reason for the population decline is unknown. However pollution from nearby towns (Drin and Knin) could be a cause and sometimes  fish kills are seen but without any obvious reasons (Mustafic pers. comm.).

Conservation Actions [top]

Conservation Actions:

There is ongoing research to determine the reasons for the decline of the species.

Classifications [top]

5. Wetlands (inland) -> 5.5. Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)
suitability:Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
9. Pollution -> 9.1. Domestic & urban waste water -> 9.1.3. Type Unknown/Unrecorded
♦ timing:Ongoing ♦ scope:Unknown ♦ severity:Unknown ⇒ Impact score:Unknown 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

3. Monitoring -> 3.1. Population trends
3. Monitoring -> 3.4. Habitat trends

Bibliography [top]

IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: (Accessed: 30 June 2017).

Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland.

Miller, P.J. 2009. A west Balkanian freshwater gobiid fish, Knipowitschia mrakovcici sp. nov. (Teleostei: Gobiidae). Journal of Fish Biology 74: 1499-1507.

Mrakovcic, M., Brigic, A., Buj, L., Caleta, M., Mustafic, P. and Zanella, D. 2006. Crvena knjiga slatkovodnih riba hrvatke. Ministarstvo Kulture,, Zagreb.

Citation: Freyhof, J. 2011. Knipowitschia mrakovcici. In: . The IUCN Red List of Threatened Species 2011: e.T184440A8277138. . Downloaded on 25 September 2018.
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