Simon, T.P. and Faber, D.J., 1987. Descriptions of eggs, larvae, and early juveniles of the Iowa darter, Etheostoma exile (Girard), from Lac Heney, Quebec. Canadian journal of zoology, 65(5), pp.1264-1269.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Etheostoma exile | Egg | Egg size after water-hardening | 1.10 | 1.1 mm |
| Etheostoma exile | Egg | Egg size after water-hardening | 0.90-1.30 | 1.1 mm |
| Etheostoma exile | Egg | Egg adhesiveness | Adhesive | Adhesive |
| Etheostoma exile | Egg | Degree-days for incubation | 13-16; 18-26 | 319.0 °C * day |
| Etheostoma exile | Larvae | Larvae behaviour | Phototactic | Demersal |