遡河魚 そかぎょ Also written さっかぎょ, 溯河魚 Meanings Noun anadromous fish (fish that migrates upstream, e.g. salmon) See also: 降河魚 (こうかぎょ). Kanji 遡 trace back. Read as ソ. 河 river 魚 fish. Read as ギョ. Jinuma: Japanese Dictionary · Word lists