| Specimen ID | 270517 |
| Group | Crustaceans-Amphipods |
| Genus | Echinogammarus |
| Species | ischnus |
| Common Name | scud |
| Country | Canada |
| State | ON |
| Locality | Lake Ontario, at Hamilton Harbour, Ontario, Canada |
| Mapping Accuracy | Accurate |
| HUC8 Name | Sixteen Mile Creek-Frontal Lake Ontario |
| HUC8 Number | 04270103 |
| HUC10 Name | Sixteen Mile Creek-Frontal Lake Ontario |
| HUC10 Number | 0427010300 |
| HUC12 Name | Sixteen Mile Creek-Frontal Lake Ontario |
| HUC12 Number | 042701030000 |
| Map | |
| Collection Day | 30 |
| Collection Month | 7 |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Record Type | Personal communication |
| Freshwater/Marine | Freshwater |
