Variability in the correlation between eye and pigment may suggest introgression between the surface morph and the cave morph as evidenced by the presence of individuals that are highly depigmented, and without eyes (A) or individuals that are also highly depigmented but with eyes (B). For the other combinations of eye and pigment see Figure 3.

  Part of: Espinasa L, Legendre L, Fumey J, Blin M, Rétaux S, Espinasa M (2018) A new cave locality for Astyanax cavefish in Sierra de El Abra, Mexico. Subterranean Biology 26: 39-53.