| Occurrence | native | ||
| Importance | subsistence fisheries | Ref. | |
| Aquaculture | Ref. | ||
| Regulations | Ref. | ||
| Freshwater | Yes | ||
| Brackish | No | ||
| Saltwater | No | ||
| Live export | |||
| Bait | No | ||
| Gamefish | No | ||
| Abundance | scarce (very unlikely) | Ref. | Winkler, H.M., K. Skora, R. Repecka, M. Ploks, A. Neelov, L. Urho, A. Gushin and H. Jespersen, 2000 |
| Comments |
Common in the Neckar in 1850 (Ref. 10013). Vulnerable in 1984 (Ref. 27368), endangered in 1994 (Ref. 41851). Critically endangered (1990) and year-round protected (1994) in Schleswig-Holstein (Ref. 41851). |
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| States/Provinces | |||
| States/Provinces Complete? | No | ||
| National Checklist | |||
| Country information | https://www.cia.gov/library/publications/resources/the-world-factbook/geos/gm.html | ||