How does Barbara Wiechmann use imagery in Feeding the Moonfish?

The moonfish come out only at night, as do most dreams, and the fish tell Martin that anything that he wants to have happen will happen as long as he paints the pictures. This signifies the merging of Martin's wishes in his dreams and the detailed imagery of his memories. The moonfish are a thread or connection between Martin's memories and his dreams, which is why he is compelled to spend every night at the dock.