Rhinoceros shrimp. Scientific name nine teeth fan shrimp (Ibacus novemdentatus) common name: pipistrelle shrimp. Inhabits 37 to 400 meters deep in the sandy mud substrate of the continental shelf flat sea, usually lurking in the shallow sand on the seabed. The body is extremely flat, with a smooth or slightly sunken back. Length up to 19 centimeters, cephalothoracic armor with gill ridges and neck notch deep, posterior lateral margin cleft for 7 to 8 large teeth, eye sockets are located in the anterior margin of the cephalothoracic armor, the second antennae are broadly flattened and no antennae whip, the fifth abdominal segments of the posterior edge of the central thorns, the lateral armor facing out.