| Main Ref. | Ashelby, C.W., S. De Grave and M.L. Johnson, 2013 |
| To | Varna Lake |
| FAO area | Mediterranean and Black Sea |
| From | Romania |
| FAO area | |
| Year | |
| Range | |
| Period | unknown |
| Established in the Wild | |
| Established in Aquaculture | |
| Significant Ecological Interactions | |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | diffused from other countries |
| Other Reason | accidental |
| Comments | The Bulgarian population of P. macrodactylus likely represents natural diffusion or short range vector transport from the Romanian population. |