| Specimen ID | 4996 |
| Group | Crustaceans-Cladocerans |
| Genus | Cercopagis |
| Species | pengoi |
| Common Name | fishhook waterflea |
| Country | Canada |
| State | ON |
| County | Niagara |
| Locality | Lake Ontario off the St. Catharines shore |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Ontario |
| HUC8 Number | 04280002 |
| HUC10 Name | Lake Ontario |
| HUC10 Number | 0428000202 |
| HUC12 Name | Lake Ontario |
| HUC12 Number | 042800020200 |
| Map | |
| Collection Day | 6 |
| Collection Month | 8 |
| Collection Year | 1998 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Comments | Many fisherman in the area report experiencing problems with line fouling. |
| Record Type | Personal communication |
| Disposal | preserved |
| Museum Cat Number | OFAH, Peterborough, |
| Verifier | Beth McKay, Ontario Federation of Anglers and Hunt |
| Freshwater/Marine | Freshwater |
| Number Collected | 100s |
