Charales

Chirostoma is a genus of Neotropical silversides from the Lerma River basin in Mexico, including lakes Chapala and Pátzcuaro. Fish in the genus collectively go by the common name charal/charales in their native range . They are heavily fished, but several of the species have become threatened due to habitat loss, introduced species and overfishing. Three species are considered extinct: C. bartoni, C. charari and C. compressum . Four others have not been recorded recently and may also be extinct.