To dream of an Eel is good if you can maintain your grip on him. Otherwise fortune will be fleeting.
To see an Eel in clear water, denotes, for a woman, new but evanescent pleasures.
To see a dead Eel, signifies that you will overcome your most maliciously inclined enemies. To lovers, the dream denotes an end to long and hazardous courtship by marriage.
Gustavus Miller's Book of Dreams