| Impact ID | 3243 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | In Guam Blue Tilapia and Redbelly Tilapia appear to be associated with declines of native fishes, probably through competition for food. |
| Reference | 32503 |
| Great Lakes Region | No |
| Cost | |
| Location | |