| Country | Portugal | Ecosystem | Tagus |
| Locality | Vila Franca de Xira, Tagus Estuary | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | 250.47 | Unit | |
| Semi Quantitative | 100-1000 | Unit | |
| Qualitative | extremely abundant | ||
| Year | 1995 - 1996 | Period | 1975-2000 |
| Date | 01/01/95 - 31/12/96 | Record Type | fishery |
| Record Type | fishery | ||
| Seasonal | yes | Method | swept area |
| Remarks | Estimated weight caught in tonnes per year. 98.7% discarded. | ||