| Country | Germany | Ecosystem | Baltic Sea |
| Locality | Western Baltic Sea (ICES Subdivision 22 and 24) | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | juvenile/recruits | unsexed | |
| Quantitative | 0 | Unit | number |
| Semi Quantitative | 0 | Unit | number |
| Qualitative | absent | ||
| Year | 1996 - 1996 | Period | 1975-2000 |
| Date | 01/06/96 - 30/06/96 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | not specified | Method | volumetric |
| Remarks | A visitor species. Life stages of the species collected (fish larvae and juveniles). Fish larvae were caught with a bongo net (60 cm in diameter, with 0.5 mm mesh size on the outer net and 0.335 mm on the inner net). At each of the 57 stations, 2 oblique hauls at a speed of 3 knots were carried out up to 2 m above the bottom. The samples were fixed on board in 4% formaldehyde. 'Flow-through counter' measurements made possible the calculation of fish volumes. | ||