(countable) fish (cold-blooded vertebrates living in water) / (countable, archaic or loosely) fish (any animal or any vertebrate living exclusively in water) / (uncountable) fish (food)

(idiomatic) A jocular expression used to encourage or justify the consumption of alcohol, especially wine, with fish dishes.

neither fish nor fowl, neither fish nor flesh (something difficult to categorise) / something half-baked, lacking resolution or determination

in one's element; at home / as it should be; perfectly

(idiomatic) as sound as a bell

fisher, fisherman (male or of unspecified gender) / component part in various compound nouns, e.g. Amazonasfischer (“Amazon kingfisher”), Austernfischer (“oystercatcher”) / component part in various compounds for different kinds of fishing boats, e.g. Grundschleppnetzfischer (“trawler”)

a common surname originating as an occupation

A municipality of Styria, Austria / A municipality of Luxembourg / A municipality of Lucerne, Switzerland / Karpniki (a village in the administrative district of Gmina Mysłakowice, Jelenia Góra County, Lower Silesian Voivodeship, Poland)