Is it safe for dogs to eat Goldfish?

possibly

MOST DEFINITELY POSSIBLE! I have a young mixed breed (small) dog and she love to chase things. One day I dropped a live goldfish I was giving to the water turtle and she snatched it up and gobbled it down. She then became absolutely fascinated every time I fed the turtle goldfish so one day I put one in a bowl and she chased it until she caught it and, yes, ate it.
they can but it probably isn't good for the dog and you'd have to take the fish out of the tank for the dog, the dog would probably be sick