| occurence | introduced | ||
| importance | Ref. | ||
| aquaculture | never/rarely | Ref. | |
| regulations | no regulations | Ref. | |
| freshwater | No | ||
| brackish | No | ||
| saltwater | Yes | ||
| live export | |||
| bait | No | ||
| game/sport | No | ||
| abundance | Ref. | ||
| comments | Introduced in the North Sea in 1983 and reintroduced in the Baltic Sea in 2004. Introduced as Merenzelleria neglecta Sikorski et Bick, 2004 in the Baltic Sea in 1985 and in the North Sea in 1996. | ||
| C = country distribution; M = map distribution; O = occurrence data; R = regional distribution | |||
| States/Provinces | |||
| States/Provinces Complete? | No | ||
| National Checklist | |||
| country information | https://www.cia.gov/library/publications/resources/the-world-factbook/geos/gm.html | ||