Portrait of an enchanting mermaid with flowing, lustrous hair surrounded by a myriad of shimmering goldfish against a vibrant tapestry of marine life. The water is dimly lit, with beams of light piercing through, creating a dramatic cinematic atmosphere. Captured in 35mm, f/2.8, with a subtle vignette effect, the scene boasts 4k resolution and spotlight cinematic lighting, showcasing an insanely detailed and intricate composition that's both elegant and ornate. The intricacies of the underwater world are super detailed, enhancing the ethereal beauty of the mermaid and her oceanic companions.