Length–weight relation and diet composition of Poblana letholepis, an endemic species from Central Mexico

Resumen

A series of crater lakes exist in the central region of Puebla, Mexico; each one with an endemic species of silverside fishes, with no information about their ecology. Poblana letholepis is an endemic species to the Crater Lake La Preciosa and under human and physical pressure endangering its presence. The weight–length relationship of both sexes and juveniles were not statistically different, and their feeding habits are similar between sexes and juveniles as well as to other species of the same family.