[1][3] The specific name, wallachi, is in honour of Van Wallach, an American herpetologist.

[2] B. wallachi is a nocturnal snake inhabiting undisturbed tropical moist forests, at altitudes of 300–400 m (980–1,310 ft).

It feeds on eggs (including those of domestic chickens) as well as on frogs and other small animals.

[3] As of 2013 populations of B. wallachi seemed stable, although they might have been significantly reduced by the 2004 Indian Ocean tsunami.

The species occurs within the Great Nicobar Biosphere Reserve, but there is no strict habitat protection.