Knapp, R.A. and Sargent, R.C., 1989. Egg-mimicry as a mating strategy in the fantail darter, Etheostoma flabellare: females prefer males with eggs. Behavioral Ecology and Sociobiology, 25(5), pp.321-326.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Etheostoma flabellare | Egg | Egg size after water-hardening | 2.56 | 2.56 mm |