Cahn, P.H., 1958. Comparative optic development in Astyanax mexicanus and in two of its blind cave derivatives. Bulletin of the AMNH; v. 115, article 2.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Astyanax mexicanus | Egg | Egg size after water-hardening | 0.50 | 0.5 mm |
| Astyanax mexicanus | Egg | Egg adhesiveness | Adhesive | Adhesive |