This bat was recorded beside small rivers in Vietnam. Its back is dark gray-brown, while the hairs on its underside have pale tips. In the original description, bats were observed making oval flights low over the water.
Specimens in the original description had dark gray-brown dorsal fur and pale-tipped hairs on the underside, giving it a whitish look.
Observers in the original account saw bats flying oval paths low over small rivers in the Yen Hop and Ban On valleys.
An extinction-risk assessment has not been added yet.