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.
Arctoscopus japonicus
Arctoscopus japonicus, the sailfin sandfish or Japanese sandfish, is a species of fish of the Percomorpha (perch-like) clade in the order Trachiniformes, being one of the two genera in the family Trichodontidae, the sandfishes. Known in Japan as , it is a commercially important fish especially for Akita and Yamagata prefectures. Its habitat occurs in sandy-mud bottoms ranging from the Sea of Japan to the Okhotsk Sea.