In the Japanese writing system, the kanji 蛟 can be read mizuchi "a Japanese river dragon" in native kun'yomi or kō in Sino-Japanese on'yomi (e.g., kōryō 蛟竜 "flood dragon: hidden genius" from jiaolong).
Chinese jiao 蛟 is more frequently used in the compound jiaolong with the -long 龍 "dragon" suffix than by itself.