Goldfish are TOUGH!
These gold fish have survived without fish food in a pond throughout the entire hot summer. They've actually grown so they are doing better than just surviving.
This pond has no filter and is not aerated. Years ago I put some barley in to balance the ecosystem but I believe the fish are alive today because of the lily pads that cover over 75% of this pond. You can see the pond liner exposed just below the rocks. The fish are hanging in a shallow spot although the deepest part of this pond might be only three feet.
I haven't fed these fish on purpose in at least four years. The lily pads are loaded with bugs and there are NO mosquito larvae in this pond.
A few years ago, I saw baby gold fish that had to have been spawned in the pond. It is likely that these fish were spawned in this pond.
I have seen a blue heron visit once in a while and he or she does take a fish or two when they can catch them.
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