Rhycherus is a genus of marine ray-finned fishes belonging to the subfamily Histiophryninae in the family Antennariidae, the frogfishes.

[1] R. wildii had its type locality given as South Australia, this taxon is now considered to be a junior synonym of Chironectes filamentosus, originally described by François-Louis Laporte, comte de Castelnau in 1872 from St Vincent Gulf in South Australia.

[1] However, the 5th edition of Fishes of the World does not recognise subfamilies within the Antennariidae, instead classifying the family, including this genus, within the suborder Antennarioidei and the order Lophiiformes, the anglerfishes.

[3] The largest species in the genus is R. filamentosus, which has a maximum published total length of 23 cm (9.1 in).

Like other anglerfish, these fish are ambush predators, luring in prey with their illicium or esca.