Chirostoma charari, the least silverside, is a species of neotropical silverside endemic to Mexico.

[2] This species has only been found in a spring in the Lake Cuitzeo basin on the Mesa Central of the Mexican Plateau.

It has a longer head and jaw, as well as larger teeth and eyes than other Chirostoma species.

[3] Its status is rated as Critically Endangered by the IUCN, and may possibly be extinct.

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