 Each nostril is large and preceded by a small flap of skin bearing two barbels; the outer barbel is thin, while the inner barbel has a spoon-like tip and a smooth to slightly fringed flange at the base.The wide mouth is terminally placed and has furrows at the corners.There are 10 tooth rows on either side of both jaws, separated by a gap in the middle; the teeth are small, narrow, and pointed.