English
flyfish
From fly + fish?
Proto-Indo-European *plew- ‘to fly, flow, run’
…
Proto-Germanic *fleugǭ ‘flying insect, fly’
Proto-West Germanic *fleugā ‘fly’
Old English flēge ‘a fly’
Middle English fflye
English fly
Proto-Indo-European *piskós
Proto-Germanic *fiskaz
Proto-West Germanic *fisk
Old English fisċ
Middle English fisch ‘an animal that inhabits the water or the meat…’
English fish
Today it means
noun Sebastes ensifer (the name given in most sources,Sebastichthys rhodochloris, seems to be a synonym for this), a brightly-coloured scorpaenoid fish of California.
Language periods are conventional ranges, not dates for this word.
Etymograph / flyfish