| Main Ref. | Cardigos, F., F. Tempera, S. Avila, J. Gonçalves, A. Colaço and R.S. Santos, 2006 |
| To | Terceira and Graciosa islands |
| FAO area | Atlantic, Northeast |
| From | Not specified |
| FAO area | |
| Year | 1980 |
| Range | |
| Period | 1975-present |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | Unknown |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | unknown |
| Other Reason | |
| Comments | Introduction was not deliberate. Ref. Cardigos, F., F. Tempera, S. Avila, J. Gonçalves, A. Colaço and R.S. Santos, 2006 |