Pseudorasbora parva Temminck & Schlegel, 1846

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English Topmouth Gudgeon ISEIA: C1. IAS of EU concern.
Lëtzebuergesch Asiatesche Goujong 1 EASIN
Français Goujon asiatique Wikipedia: Wikipedia - English - Topmouth Gudgeon Wikipedia - Français - Goujon asiatiqueo Wikipedia - Deutsch - Blaubandbärbling Wikipedia - Nederlands - Blauwband
Deutsch Blaubandbärbling Wikispecies: Wikispecies - Pseudorasbora parva
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Report the species

Report Pseudorasbora parva to the National Museum of Natural History.

Status and distribution in Luxembourg

Distribution map of Pseudorasbora parva Temminck & Schlegel, 1846 in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2020-01-21.

The topmouth gudgeon was first detected in Luxembourg during the systematic river inventory of 2005, when it was found in the upstream dam of the Upper Sauer Lake in Bavigne.

Pseudorasbora parva is a fish species that typically inhabits eutrophic ponds, ditches and muddy brooks rich in aquatic vegetation but can sometimes also be found in larger streams and lakes. It is very tolerant to a wide range of environmental conditions. The species is highly invasive in Europe and is a healthy host for a deadly, non-specific pathogen (Sphaerothecum destruens) that poses a threat to the conservation of European fish diversity. Moreover, the topmouth gudgeon consumes large quantities of planktonic crustaceans which results in high exploitative competition with native fish species.

Risk assessment

ISEIA protocol: C1 (1+1+1+1) (Ries et al. 2014: 199).


  • Administration de la Gestion de l’Eau (2010): Les poissons au Luxembourg, Cartographie des poissons, lamproies et écrevisses du Grand-Duché de Luxembourg, 213 pp.
  • Klees, H., 1981. Luxemburger Tiernamen. Beiträge zur luxemburgischen Sprach- und Volkskunde XIV. Institut grand-ducal, Section de linguistique, de folklore et de toponymie. 2. Aufl. 131 S. Imprimerie Pierre Linden, Luxembourg.
  • Ries, C., M. Pfeiffenschneider, Engel, E., J.-C. Heidt & M. Lauff, 2014. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of vertebrates in Luxembourg. Bull. Soc. Nat. luxemb. 115: 195-201. [PDF 247 KB]

 Page content last updated on 2019-11-28. Last proofread by Caroline Grounds on 2019-11-28.