| Impact ID | 6657 |
| Impact Type | Other |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | When in excessive numbers Ctenopharyngodon idella destroys existing food chain relationships and threatens the spawning grounds of commercial fishes. |
| Reference | 41949 |
| Great Lakes Region | No |
| Cost | |
| Location | Turkmenistan reservoirs |
