isospondyli: most primitive teleost fishes; all are soft-finned: salmon; trout; herring; shad; sardines; anchovies; whitefish; smelts; tarpon
animal order: the order of animals
received pronunciation: the approved pronunciation of British English; originally based on the King's English as spoken at public schools and at Oxford and Cambridge Universities (and widely accepted elsewhere in Britain); until recently it was the pronunciation of English used in British broadcasting