| Impact ID | 9933 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In New South Wales, after the introduction of the Boolarra strand of Cyprinus carpio, populations of invasive Tinca tinca declined and were effectively replaced with Cyprinus carpio. |
| Reference | 45327 |
| Cost | |
| Location | Murray-Darling River system, New South Wales, Australia |