Not for my GSD either!
My 5-month German Shepherd didn't get on with these. He would eat them, but didn't appear to like them that much, and around the time I was using them as training treats he had a lot of diarroeha and I suspect it may have been caused by these. (I once gave him some fresh mackerel and he vomited, so maybe fish is just not his thing). All dogs are different, though, and I know lots of GSD owners whose dogs absolutely LOVE dried sprats.