Research has been conducted on fish in the Rio Grande, providing insight into the evolutionary process of species. This study sheds light on the speed at which species can evolve. Further details on the research and its findings are available from the Texas Standard.

The study's focus on fish in the Rio Grande offers a unique perspective on evolution. For those interested in learning more about the research and its implications, additional information can be found through the Texas Standard, based in The Woodlands, TX.