Portrait of an enchanting mermaid with luxuriant, flowing hair, surrounded by a shimmering school of goldfish amidst a vibrant backdrop of marine life. The muted light filters softly through the ocean depths, casting a cinematic glow. Captured with a 35mm lens at F/2.8, the scene features a subtle vignette that frames the underwater tableau. The image is rendered in 4K quality with a spotlight effect, emphasizing the mermaid's detailed, ornate features and graceful presence, maintaining an elegant and intricately detailed aesthetic.