| Impact ID | 5763 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | European eels (Anguilla anguilla) collected from commercial fishermen with Anguillicola crassus infections had empty, thickened swim bladders. |
| Reference | 40165 |
| Cost | |
| Location | Netherlands |