I picked up 10 goldfish fry from a local private breeder who had a batch in may. Something went wrong in my grow out tank though and they all started dying already 4 days after! I managed to save one by giving it a salt treatment for a few days. It is now in my big tank, where the water parameters are very stable. I had to make a DIY fry cage though because the larger fish were a bit too interested in it and they may have tried swallowing it if they got hungry enough