| Impact ID | 6667 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In studies of the James and Rappahannock rivers, blue catfish Ictalurus furcatus are estimated to make up 75% of the total fish biomass; associated with decline in native white catfish Ameiurus catus. |
| Reference | 31054 |
| Cost | |
| Location | James and Rappahannock Rivers, Virginia |