| Specimen ID | 33561 |
| Group | Fishes |
| Genus | Ctenopharyngodon |
| Species | idella |
| Common Name | Grass Carp |
| State | IL |
| County | Massac |
| Locality | Ohio River near mile marker 945, near Metropolis |
| Mapping Accuracy | Approximate |
| HUC8 Name | Lower Ohio |
| HUC8 Number | 05140206 |
| Map | |
| Collection Day | 13 |
| Collection Month | 7 |
| Collection Year | 1987 |
| Year Accuracy | Actual |
| Potential Pathway | stocked for biocontrol |
| Status | established |
| Comments | Remote possibility specimens may be silver carp. Late prolarval/early postlarval stage, myomere counts of 32-33 preanals and 10-11 postanals. First record of reproductions in these river systems. |
| Record Type | Personal communication |
| Verifier | Sam McCord, Hunter Env. Services, St. Louis, MO |
| Freshwater/Marine | Freshwater |
| Number Collected | 4 |
| Year Class | larvae |
| Size | 6 mm TL |
