noun
river fish
Refers to fish that live in rivers, as opposed to sea fish. Often contrasted with 海魚 (かいぎょ, sea fish) or 川魚 (かわうお/かわざかな, river fish). 河魚 is a more formal or literary term compared to the common 川魚.
See also: 川魚
河魚は海魚よりも淡白な味わいのものが多い。
River fish often have a milder flavor than sea fish.