Portrait of an enchanting mermaid surrounded by a shimmering school of colorful goldfish, set against a backdrop of vibrant marine life. Soft rays of light penetrate through the deep blue water, casting an ethereal glow. Captured in a cinematic style with a 35mm lens at F/2.8, featuring a gentle vignette. The scene is rendered in stunning 4k resolution, with a perfect balance of spotlight and cinematic lighting, revealing an insanely detailed and intricate composition. The mermaid's appearance is elegant and ornate, her features super detailed, evoking a sense of otherworldly beauty and mystique in this underwater realm.