sentences:  By far the most widely (if sporadically) distributed member of its genus, the pygmy ribbontail catshark has been reported from Tanzania, the Gulf of Aden, the Gulf of Mannar, the Bay of Bengal, the Andaman Islands, Vietnam, and the Philippines.This bottom-dwelling shark occurs at depths of on outer continental and insular shelves or upper slopes, commonly over mud.The pygmy ribbontail catshark has a thin body with a short, rounded snout and elongated, oval eyes bearing rudimentary nictitating membranes.