Invasion

Invasion Description

1st Record: Helgoland/Germany/North Sea (1866, Jensen and Knudsen 2005, imported for aquarium trade, surplus animals released)

Geographic Extent

Helgoland/Germany/North Sea (1866, Jensen and Knudsen 2005, imported for aquarium trade, surplus animals released); Terschelling/Netherlands/North Sea (1873, 5 animals caught, Wolff 2005); Unknown location/North Sea (1974, caught by an East German trawler, Wolff 1977, 1 specimen); East Frisian Islands/Germany/North Sea (1972, Wolff 1977, 1 specimen); Fano/Denmark/North Sea (1975, Wolff 1977, 1 specimen); Hirthals/Denmark/North Sea (1975, Wolff 1977, 1 specimen); between Kandestederne and Gammel Skagen/Denmark/North Sea (1972, Wolff 1977, 1 specimen)