The Chinese paddlefish (Psephurus gladius) (simplified Chinese: 白鲟; traditional Chinese: 白鱘; pinyin: báixún), also known as Chinese swordfish, was among the largest freshwater fish, although the species was anadromous.[1] It was the only species in the genus Psephurus and one of two extant species in the paddlefish family (Polyodontidae), the other being the American paddlefish (Polyodon spathula). The Chinese paddlefish is at least critically endangered and has not been seen in more than a decade, and following the lack of specimens in capture surveys, it is now likely extinct.[1][4]