Sawfish
Sawfishes, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish with some species reaching lengths of about . They are found worldwide in tropical and subtropical regions in coastal marine and brackish estuarine waters, as well as freshwater rivers and lakes.
Shark finning
Fins from the critically endangered sawfish (Pristidae) "are highly favored in Asian markets and are some of the most valuable shark fins". Sawfishes are now protected under the highest protection level of the Convention on International Trade in Endangered Species (CITES), Appendix I.