Poblana ferdebueni, the Chignahuapan silverside is a species of neotropical silverside endemic to Mexico. This species was described by Aurelio Solórzano Preciado and Irma López-Guerrero in 1965 from a type locality of Laguna de Almoloya, Chignahuapan Lake, Puebla State, Mexico and was given the specific name ferdebueni to honour the Spanish ichthyologist Fernando de Buen y Lozano (1895-1962) who had originally proposed the genus Poblana.[1]