Ameca: Balneario El Rincón (20°40'52"N, 103°50'39"W).

Conservation: The water level has been decreasing over the years, as it can be seen in the upper spring turned into a round pool, the level of the pool has decreased over the years by approximately 1.5 m according to administrators of the swimming place, the level nevertheless seems to have remained relatively constant for the past 10 years. Poecilia sphenops and Oreochromis sp. reported as exotic in 1999 (Kabbes et al., 2013).

During a visit in August 2021 I noticed Coptodon rendalli, Oreochromis aureus, Poecilia mexicana, Pseudoxiphophorus bimaculatus, Xiphophorus maculatus and X. hellerii as exotic species. The number of Zoogonetiqus tequila seemed to me very low.