Their dorsal ground color is medium brown, with a wide black band running laterally from its snout tip around the body and a thin, white, partially-interrupted dorsolateral stripe situated immediately above the black band.

In fact, this region is transparent; the purple coloration is a result of visible blood vessels in the skin.

[3] After being kept in preservative for 2 months, most of the frog's coloration changes to a grayish brown and ventral areas become white.

[3] A. kaiei has only been reported from Guyana in the Kaieteur National Park, but is found throughout the Pakaraima Mountains in the Guiana Shield in South America.

[5] The most significant threat posed to A. kaiei and its habitat are gold and diamond mining and quarrying, which occurs within Kaieteur National Park and threatens the ecosystem.

[3] The IUCN assessed A. kaiei last in November 2017 and rates this species as endangered with a stable population trend.

[8][9] A. kaiei frogs are diurnal and terrestrial, not limited to areas near and surrounding bodies of water.

[3] Due to the sympatric relation with A. beebei, the pulse rate and dominant frequency of A. kaiei calls have been suggested to pose a limitation on selection pressures for the calls of A. beebei, as selection should tend towards signal divergence for closely related sympatric species.

[10] Due to its sympatric and closely related relationship with A. beebei, A. kaiei has been studied alongside A. beebei to better understand the novel evolution of the “Dear Enemy” effect, which is the phenomenon where individuals of a given species react more aggressively to conspecific strangers than neighbors because strangers are more likely to pose as competitors for limited territorial resources than neighbors.

In fact, the presence of the “Dear Enemy” effect is a novel evolution, as equal reaction towards neighbors and strangers is both the common and ancestral state for Neotropical frogs.

[15][16] Given their similar calling properties, this divergence likely arose due to each species’ distinct reproductive behaviors and resources.

This species is facultatively oophagous, with females delivering trophic eggs to their offspring that likely facilitates faster growth and development, which in turn lessens the potential of predation, risk of desiccation, and possibility for cannibalism.

[18] Females deposit fertilized eggs on the underside of dead leaves on the forest floor in the calling territory of the male.