Kendall Jr, A.W. and Mearns, A.J., 1996. Egg and larval development in relation to systematics of Novumbra hubbsi, the Olympic Mudminnow. Copeia, pp.684-695.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Novumbra hubbsi | Egg | Egg size after water-hardening | 1.30-2.20 | 1.75 mm |
| Novumbra hubbsi | Egg | Egg size after water-hardening | 1.89 | 1.89 mm |
| Novumbra hubbsi | Egg | Egg adhesiveness | Adhesive | Adhesive |
| Novumbra hubbsi | Larvae | Initial larval size | 5.2 | 5.2 mm |
| Novumbra hubbsi | Egg | Egg Buoyancy | Demersal | Demersal |
| Novumbra hubbsi | Egg | Incubation time | 13 | 13.0 days |
| Novumbra hubbsi | Egg | Temperature for incubation | 10.1 | 10.1 °C |