Islamic Interpretation of Dreams (Ibn-i Sirin):
In season, an eggplant in a dream means earnings with little effort, while seeing an eggplant out of season in a dream denotes negativity and disliked. Eating an eggplant in a dream means falling prices.
An eggplant in a dream also represents the element of arrogance, self adulation, perfidy, cheating others, and a man with many faces.
As for fishermen, seeing eggplants in a dream means a good catch, joy and success.