When we will to speak or move, unconscious physical and psychological impulses and processes occur to produce the response. These deeply unconscious processes are often depicted by fish. Also the attitudes and urges we have in common with humanity—the collective unconscious, and the impulses or insights arising therefrom—can therefore represent the Self or Christ; sexual drive in connection with reproduction, the many little fishes being sperm. In this sense we are the fish which swam the incredible journey and grew into a human, but is still on the odyssey of life and death.
The fish may be the wisdom we have not yet brought to consciousness, regarding our personal journey in time and eternity. Fishing: creating a receptive state of consciousness which allows the deep insights or processes to become known; trying to find spintual nourishment. Eating fish: integrating our inner realisations; partaking of Christ. Eaten by fish: feeling threatened by the unconscious; threat of losing conscious or rational direction of life. Dead fish: non-expression of basic urges.
[1]