A realistic full-body portrait of a superhero representing the Pisces zodiac sign, named 'Dream Swimmer'. The hero is mystical and creative, with a graceful and ethereal build. The costume is designed with shades of blue and sea green, symbolizing water and the dream world. The design should include elements reminiscent of fish scales and flowing water, highlighting their ability to breathe underwater and manipulate dreams. The character's pose is serene and dreamlike, reflecting their creative and empathetic nature. The background should be an underwater scene blended with surreal dream-like elements, emphasizing the Pisces sign's connection to the depths of the ocean and the realm of dreams.