Portrait of an enchanting mermaid with cascading hair, surrounded by a swirl of shimmering goldfish against the vibrant backdrop of diverse marine life. The faint shafts of light penetrate through the depths, casting a mystical glow. Cinematic, captured on 35mm film at F/2.8, with a subtle vignette effect and rendered in 4k. Dramatic spotlight and cinematic lighting enhance the scene, featuring incredible detail and complexity. The composition is elegant and richly ornate, focusing on minute intricacies and graceful elements.