Andreasen, J.K. and Barnes, J.R., 1975. Reproductive life history of Catostomus ardens and C. discobolus in the Weber River, Utah. Copeia, pp.643-648.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Catostomus ardens | Egg | Oocyte diameter | 2.05-2.25 | 2.15 mm |
| Catostomus discobolus | Egg | Oocyte diameter | 2.05-2.26 | 2.15 mm |