[1] It is an arboreal species occurring in various microhabitats of humid montane forest such as the leaf bases of bromeliads and aroids and in bushes.

[3][4] This species is named after Leslie Desmond Foster Vesey-Fitzgerald who worked on Trinidad and Tobago in the early 1930s.

[citation needed] The male and female frogs are smaller than those of the F. pygmaeus species by approximately 25.5% and 26.6%, respectively.

[5] As in F. pygmaeus, the tadpoles have beaks with only small amounts of keratin and there are no denticles.

[1][5] Two to six eggs[1] are carried in a dorsal semi-enclosed pouch by females,[5] having been deposited there by the males.