| Specimen ID | 4974 |
| Group | Crustaceans-Cladocerans |
| Genus | Cercopagis |
| Species | pengoi |
| Common Name | fishhook waterflea |
| Country | Canada |
| State | ON |
| Locality | Lake Ontario in Hamilton Harbour |
| Mapping Accuracy | Approximate |
| HUC8 Name | Sixteen Mile Creek-Frontal Lake Ontario |
| HUC8 Number | 04270103 |
| Map | |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Record Type | Personal communication |
| Verifier | Ron Dermott, Dept. of Fisheries and Oceans, Canada |
| Freshwater/Marine | Freshwater |
