| País | Germany | Ecosistema | Baltic Sea |
| Localidad | Western Baltic Sea (ICES Subdivision 22 and 24) | Depth | |
| Introducida | Year Intro. | ||
| Estadio de desarrollo | juvenile/recruits | unsexed | |
| Quantitative | 0.0028 | Unit | numbers/m2 |
| Semi Quantitative | <100 | Unit | numbers/m2 |
| Qualitative | rare | ||
| Año | 2002 - 2002 | Período | 2001-present |
| Fecha | 01/04/02 - 31/05/02 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | not specified | Método | volumetric |
| Observaciones | 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. | ||