Astacus leptodactylus Eschscholtz, 1823

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English Danube crayfish ISEIA: C1
Lëtzebuergesch Europäesche Suppekriibs EASIN
Français Ecrevisse turque Wikipedia: Wikipedia - English - Danube crayfish Wikipedia - Français - Ecrevisse turque Wikipedia - Deutsch - Galizischer Sumpfkrebs Nederlands
Deutsch Galizischer Sumpfkrebs Wikispecies: n/a (2017)
Nederlands n/a Back to the list of invertebrates

Report the species

Report Astacus leptodactylus to the National Museum of Natural History.

Brief description

Astacus leptodactylus Eschscholtz, 1823 is a large Eastern European river crayfish. The Galician crayfish grows to a size of 16 to 18 cm, in extreme cases up to 25 cm. The basic colouration is usually light sand-coloured to light brown. It is slimmer than the Noble crayfish and its most conspicuous distinguishing features are the two extremely long, scissor-like claws (Wikipedia contributors 2019).

The crayfish prefers warm, nutrient-rich waters of the lowland or running waters with a slow current. It also lives in very muddy waters (swamp crayfish). If suitable embankments are available, it digs residential caves itself. It has a higher resistance against pollution than the Noble crayfish (Wikipedia contributors 2019).

Originally, the crayfish was resident in the catchment area of the Black Sea and the Caspian Sea. After the crab plague occurred, it was used in some waters of Central Europe, as it was thought that this species was resistant to the crab plague. All current occurrences in Central Europe are based on these stocking measures (Wikipedia contributors 2019).

Status and distribution in Luxembourg

Distribution map of Astacus leptodactylus Eschscholtz, 1823 in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2020-01-23.

Astacus leptodactylus Eschscholtz, 1823 was first documented by Yoichi Machino in 1999 in ponds in the valley of the Rouderbaach creek (Grevenmacher) (MNHNL 2000-).

Currently, 2 records of the Danube crayfish are accessible through the MNHNL-mdata portal (MNHNL, iNaturalist & GBIF 2019).

Risk assessment

ISEIA protocol: C1 (1+1+1+1) (Ries et al. 2017: 68).


  • MNHNL, 2000-. Astacus leptodactylus Eschscholtz, 1823 in Recorder-Lux, database on the natural heritage of the Grand Duchy of Luxembourg. Musée national d’histoire naturelle, Luxembourg. URL: [Accessed 2019-10-24]
  • MNHNL, iNaturalist & GBIF, 2019. Astacus leptodactylus Eschscholtz, 1823 in MNHNL-mdata, online portal combining species observation from Recorder-Lux, iNaturalist and GBIF. National Museum of Natural History, Luxembourg. URL: [Accessed 2019-10-24]
  • Ries, C., A. Arendt, C. Braunert, S. Christian, A. Dohet, A. Frantz, G. Geimer, M. Hellers, J. A. Massard, X. Mestdagh, R. Proess, N. Schneider & M. Pfeiffenschneider, 2017. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of invertebrates in Luxembourg. Bull. Soc. Nat. luxemb. 119: 63-70. [PDF 360 KB]
  • Wikipedia contributors, 2019. Astacus leptodactylus Eschscholtz, 1823 in Wikipedia, Die freie Enzyklopädie. URL: [accessed 24. October 2019]

 Page content last updated on 2019-12-05. Last proofread by Caroline Grounds on 2019-12-05.