Portrait of an enchanting mermaid with flowing, exquisite long hair, surrounded by a school of shimmering goldfish and a vibrant tapestry of marine life. The subtle light filters through the deep water, creating a mystical ambiance. Captured with cinematic 35mm clarity at F/2.8, the scene is enriched with a delicate vignette, 4K resolution, and artful spotlighting. The composition is breathtakingly detailed and intricate, exuding elegance and ornate beauty, masterfully crafted to showcase an ethereal underwater realm, maintaining a sense of wonder and otherworldly allure.