Mexican Eyeless Characin Fishes, Genus Astyanax:
Environment, Distribution, and Evolution

Despite the title, most of this book is about the karst hydrology and caves of the Sierra de El Abra, Tamaulipas and San Luis Potosí. Numerous caves in which the fish have been found are described, and there is a foldout cave-location map. The final fifteen pages discuss the distribution of surface and blind forms of the Mexican tetra Astyanax mexicanus (A. fasciatus) with regard to the karst hydrogeology of the region.