| Specimen ID | 266541 |
| Group | Crustaceans-Cladocerans |
| Genus | Cercopagis |
| Species | pengoi |
| Common Name | fishhook waterflea |
| Country | Canada |
| State | ON |
| Locality | Lake Onario, Peterborough Co., Marysburgh Twp. |
| 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 | 9 |
| Collection Month | 1 |
| Collection Year | 1998 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 19331 |
| Author: | Ontario Federation of Anglers and Hunters. |
| Date: | 2009 |
| Title: | OFAH Database All Species - 2009 Download. |
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| Comments | Between False Duck Island, Yorkshire and Main Duck Island |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
| Number Collected | 25 |
