It possesses small maxillary barbels and an unfringed shallowly arcuate upper lip. They have elongated, cylindrical bodies, with short barbels and large spiracles. Sawsharks have a pair of long barbels about halfway along the snout. The terminal mouth is slightly oblique with non-fleshy, firm lips, and no barbels. Despite their name, not all catfish have prominent barbels or "whiskers". Near the barbels, the longnose sawshark possesses a pair of ampullae of Lorenzini. These fish have, when they are present, a unique pair of maxillary barbels. Another unique feature is the exceptionally long barbels under the mandible. Like other sturgeons, they eat mollusks and crustaceans which they find with their barbels. There are a pair of long, slender barbels in front of the nostrils. In some teleost fish, the lips may be modified to carry sensitive barbels. Unlike sawfish, sawsharks also have a pair of long barbels on the rostrum ("saw"). This is a transparent freshwater catfish with two long barbels. The prominent lower jaw has two barbels at its tip. The mouth of the loach is surrounded by three sets of barbels.