Neptune & Pisces
Pisces
The constellation of Pisces is usually seen to form a picture of two fish, tied together by the tails with a string, and thus eternally connected. The Greek story tells of the goddess Aphrodite (Venus in Roman myth) and her son Eros (Cupid in Roman myth), who transformed themselves into fishes and leapt into the river while escaping from Typhon (or Typhoeus), a frightening god associated with great winds (as in a TyphoOn). Aphrodite and Eros tied their tails together so they would not lose each other while fleeing through the water.
Many metaphorical references are made in astrology about Pisces and the fact that it is represented by two fish. A popular idea is that the fish are swimming in opposite direction, representing internal conflict in someone with Pisces energy. I am more inclined to see it as a representation of the Piscean need to keep one foot on earthly matters and one foot on the spiritual plane. Pisces has a need to look toward spiritual and mystical matters, and develop qualities of compassion and imagination, but they still must reside on the earthly plane with it’s Saturnian rules and corporeal consequences.
Neptune
The Roman god Neptune, as often happens, seems to have lost the popular fight to the Greek equivalent, Poseidon, the god of the sea. There are countless gods of the sea, even just within Greek mythology alone, but Poseidon is the main man, having inherited the realm of the sea when his brother, Zeus (Jupiter), freed him from the belly of Cronus (Saturn) and they divvied up the world into the sky, the sea, and the air.
Even though he lived in the cool sea waters, he had a hot temper and was a sore loser. His temper tantrums were known to cause earthquakes. He and the goddess Athena had a contest to see who would be the patron god of the city. Each god would give the city inhabitants a gift, and whichever gift they preferred would determine which god would rule over the city. Poseidon gave the gift of water, but the water was a salty spring that was not drinkable. Athena gave the versatile gift of the olive tree, and was determined the winner. Poseidon, in his anger at losing, flooded the city. He also played a role in the fall of Troy, when he was asked by the king to build a wall around the city and after having done so, refused to pay Poseidon for the work.
Are you kidding? Refuse to a pay a god? Poseidon, in a rather tame act of vengeance, withdrew his protection and that, coupled with other events, left Troy vulnerable to attack.