This antelope with long, thin hoofs is perfectly adapted to move around the swamps and marshlands it inhabits. Unlike some of its close relatives, it has neither facial no plantar glands, for hormonal marking.
Only the males develop horns, which are spiral in shape and can grow to 80 - 90 cm. Both sexes have white spots and up to ten stripes on their bodies as well as various markings on their neck and cheeks.
With sexual madurity, the males acquire a dark brown-grey colour while the females and young specimens have a light reddish coat.