I have gotten my GSH from one supplier for 10+ years. Even 10"+ fish seem to be spawning. No way to ID if the spawn from any particular fish is successful, but if the habitat is there, there will be a reproducing population in the pond. Many pond owners don't understand that different fish need different spawning habitat.

I was told today when talking to a person about their pond and spawing habitat, that they put plenty of pea gravel in the pond. RES/YP/GSH/FHM/SMB pond.

I got a blank stare when I asked if they put any habitat in the pond for the YP/SMB/FHM/GSH to spawn on.