Richardsonichthys, is a monotypic genus of marine ray-finned fish belonging to the subfamily Tetraroginae, the waspfishes, which is classified as part of the family Scorpaenidae, the scorpionfishes and their relatives. The only species in the genus is the whiteface waspfish (Richardsonichthys leucogaster), also known as the whitebelly roguefish, rouge fish, Torres Strait soldier fish or Richardson's waspfish. This species is native to reefs of the Indian Ocean and the western Pacific Ocean.

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