Incidentally the name caviar could originate from the the fact that the Persians were the first eaters of the tasty fish egg delicacy. They called it chav-jar, which loosely translates to "cake of power" as they believed that caviar cured a variety of ailments and improved their stamina. Caviar has been revered as an aphrodisiac for centuries – when Catherine the Great of Russia was urged to provide an heir to the throne she replied "Bring me some caviar, and tonight at supper, send me the best built of my officers."
Caviar’s reputation as an aphrodisiac is perhaps also because fish and their by-products have been linked to the myth of Aphrodite, the Goddess of Love, who was born from the foam of the sea. Another reason for its reputation could also be that eggs were known to be a symbol of fertility. But more than anything else, because of its highly medicinal properties, most people were led to believe that it can nourish and enhance nerve cells, hence an extremely heightened romantic instincts.