| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Cottus | bairdii | 59 |
| 2 | Cottus | gobio | 52 |
| 3 | Cottus | carolinae | 47 |
| 4 | Cottus | asper | 25 |
| 5 | Cottus | cognatus | 15 |
| 6 | Cottus | beldingii | 11 |
| 7 | Cottus | aleuticus | 8 |
| 8 | Cottus | rondeleti | 7 |
| 9 | Cottus | tallapoosae | 4 |
| 10 | Cottus | gulosus | 4 |
| 11 | Cottus | caeruleomentum | 4 |
| 12 | Cottus | perifretum | 4 |
| 13 | Cottus | sabaudicus | 4 |
| 14 | Cottus | girardi | 3 |
| 15 | Cottus | rhotheus | 3 |
| 16 | Cottus | immaculatus | 2 |
| 17 | Cottus | duranii | 2 |
| 18 | Cottus | aturi | 2 |
| 19 | Cottus | petiti | 2 |
| 20 | Cottus | poecilopus | 2 |
| 21 | Cottus | hispaniolensis | 1 |
| 22 | Cottus | perplexus | 1 |
| 23 | Cottus | hypselurus | 1 |
| 24 | Cottus | specus | 1 |
| 25 | Cottus | chattahoochee | 1 |
| 26 | Cottus | sibiricus | 1 |
| 27 | Cottus | paulus | 1 |