Esmaeilius vladykovi

Its specific name honours the zoologist Vadim D. Vladykov (1898-1986) who studied the fishes of the Caspian basin and the person who accepted the species author, Brian W. Coad, as a graduate student.

[3][4][5] The native fish population is threatened by different factors including environmental pollution as well as biological threats such as parasites.

Females lack the typical, large, lozenge-shaped spot at the base of the caudal fin seen in A. sophiae.

The stomach content of this fish consists mostly of freshwater crustaceans and the relative length of the gut suggests a carnivorous habit.

The gonadosomatic ratio and ovary condition suggests that the reproductive season of the species is between late March and June with a peak in early April.