| País | Portugal | Ecosistema | Atlantic Ocean |
| Localidad | Óbidos Lagoon | Depth | |
| Introducida | Year Intro. | ||
| Estadio de desarrollo | not specified | unsexed | |
| Quantitative | 4 | Unit | number |
| Semi Quantitative | <100 | Unit | number |
| Qualitative | rare | ||
| Año | 1993 - 1994 | Período | 1975-2000 |
| Fecha | 01/01/93 - 31/12/94 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | no | Método | |
| Observaciones | Monthly sampling between January 1993 and December 1994, using a 50-m long beach seine with 1-m height and a mesh size of 10 mm. | ||