Marteinsdottir, G. and Able, K.W., 1988. Geographic variation in egg size among populations of the mummichog, Fundulus heteroclitus (Pisces: Fundulidae). Copeia, pp.471-478.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Fundulus heteroclitus | Egg | Oocyte diameter | 1.60-2.40 | 2.0 mm |