[3] N. humayuni is a plump frog with prominent, forward-facing eyes with vertically slit pupils, a wide head, and rounded snout.

The fore limbs are short and plump, and the flattened fingers have large discs on the tips.

The male maintains a territory, positioning himself on a twig or leaf overhanging a stream and calling repeatedly.

He then moves to a new position with potential for egg deposition a few centimetres (inches) away and starts making his advertisement call again to attract another female.

[4] Although locally common, the number of Nyctibatrachus humayuni frogs is declining slowly.