La Trinidad Pupfish (Cyprinodon inmemoriam)
The La Trinidad Pupfish was described in 1993, when it was already extinct.
The species was discovered in March 1984 in a spring named Ojo de Agua La Trinidad in the city of Aramberri in Nuevo León, it was then found extinct, just 18 months later in October 1985.
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References:
[1] M. L. Lozano-Vilano; M. De La Maza-Beningnos: Diversity and status of Mexican killifishes. Journal of Fish Biology 90(1): 1-36. 2016
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edited: 27.05.2019