In Pisces Mythology, Pisces has always been the fish.
In the Greek legend, Pisces is connected to how Aphrodite and her son Heros or (Eros) eluded the deadly monster, Typhon.
Aphrodite and Heros or (Eros) turned into fish, and bound their fins together to make certain they weren't split up.
Even today, many depictions of Pisces show two fishes bound together with a cord or two fishes with a line or bar joining them as one.
According to another version, The Ikthyes (or Ichthyes) were a pair of large Syrian river fish who rescued Aphrodite and Eros when they were fleeing from Typhon.
It is also said that these fish attended to the birth of Aphrodite by carrying Aphrodite onto land after she was born in the sea.
Still another myth says that Pan the goat god changed into a goatfish (Capricornus) and leapt into the river to salvage Aphrodite and Eros.
In all these renderings of the narration, the fishes were committed to the stars as the Constellation Pisces.
Pisces is a dim constellation and one of the 48 original constellations numbered by Ptolemy.
Pisces from the Latin (Pisces the Fish), plural form of piscis -fish, translated to the Greek (Ichthyes the Fish) the plural form of Ichthyes- fish.
Translated to the Akkadians (Zibbati: meaning -the fins and Rikis nu.mi: meaning -Fish cord), translated to the Sumerian (Zi.me: meaning -the fins and Du.nu.nu: meaning- the Fish cord).
Both the Sumerians and Akkadians have a similar meaning to their words and these definitions answer for the mutual icons of Pisces as 2 fish connected by the fins.