Hi Babs
in our breed growth anomoly have happened and continue to happen in the front leg pastern area when teething and going thru the height gaining stage, it is not good for young growing pups, take it from someone with experience and who is responsible for the pups i produce.
of course fish is good, but for adults.
not when going thru the growth period when the diet must be individually met with secific requirements.
having been in this breed since 1986 i have seen and experienced a lot, specific with our breed.
And we are talking fish kibble.
i add makeral and salmon to the kibble of pups and adults all the time.
it is good for them, but, a fish based kibble is not balanced enough to meet the great demands on growth and teething of an adolesent