Few glass makers escaped the ubiquitous fish, but few will admit to them. Time for someone to start collecting these and describe them in detail - pinpointing them to the various works. In general you could say "1950's" - but examples are known from Italy, from England (I believe even Walsh Walsh did 'em), from Sweden, from Czechoslovakia and from Germany. Like glass clowns, there is no telling who made what. So please, get some more. And get some with labels.....