Pisces occupies a singular and densely layered position in the depth-psychology corpus, functioning simultaneously as zodiacal sign, astrological aeon, mythological archetype, and psychological typology. Jung’s treatment in Aion (1951) is the most architecturally ambitious: there, Pisces designates the Platonic month inaugurated near the birth of Christ, whose identification as the first fish of the new aeon binds together astrology, Gnostic speculation, and the phenomenology of the Self. The sign’s two fish swimming in opposite directions become, for Jung, an emblem of irreconcilable psychic opposites — spirit and matter, redeemer and antichrist — whose tension structures the entire Christian era. Liz Greene deepens this mythological reading in The Astrology of Fate (1984), tracing the Piscean archetype through the dying-and-rising redeemer figures of Attis, Tammuz, Adonis, and Christ, and locating in the sign the perennial drama of spirit imprisoned in flesh, dissolution, and dismemberment. Greene and Sasportas elaborate the psychological typology across their collaborative seminars and house-system texts, mapping the sign onto Neptune’s domain of boundarylessness, sacrifice, addiction, and visionary artistry. Arroyo positions Pisces within the mutable-water quadrant as a spiral of energy directed toward karmic inheritance. Throughout the corpus a productive tension persists between Pisces as salvific dissolution and as pathological evasion, between the mystic and the addict, the healer and the victim.