| Specimen ID | 1695329 |
| Group | Crustaceans-Cladocerans |
| Genus | Cercopagis |
| Species | pengoi |
| Common Name | fishhook waterflea |
| State | IL |
| County | Cook |
| Locality | Chicago River-Chicago Sanitary and Ship Canal |
| Mapping Accuracy | Accurate |
| HUC8 Name | Chicago |
| HUC8 Number | 07120003 |
| HUC10 Name | North Branch Chicago River-Chicago Sanitary and Ship Canal |
| HUC10 Number | 0712000301 |
| HUC12 Name | South Branch Chicago River-Chicago Sanitary and Ship Canal |
| HUC12 Number | 071200030107 |
| Map | |
| Collection Day | 13 |
| Collection Month | 7 |
| Collection Year | 2021 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed current | shipping ballast water |
| Status | unknown |
| Comments | Caught in a 50cm ring opening with 500 micron mesh net pushed through the water. |
| Record Type | NAS sighting report |
| Verifier | Austin Happel (Shedd Aquarium) |
| Freshwater/Marine | Freshwater |
| Number Collected | 8 |
| Photo | |
