I have not seen one of the goldfish in my pond for weeks. It is hard to see the fish because the water is green. I have to get the filter working properly. I don't think that he got eaten. He is the only fish that i have not seen. I have seen everyone else. What happened to him? Could he just be hiding? He was a favorite of mine and he was pretty big. He was my oldest fish and i hope he is not gone.