coral reef underwater colorful tropical fish
Prompt
Photorealistic underwater close-up of a vibrant tropical reef fish with a deep violet-blue body and bright lemon-yellow tail fin, swimming left to right across the center of the frame. A second pale fish is partially visible at the far left edge, softly out of focus, adding depth. Background is a dark layered coral-rock reef wall with suspended tiny bubbles and particles in the water. Lighting is dim aquarium-like blue-violet illumination with subtle highlights on scales, calm and immersive mood. Color palette of indigo, purple, charcoal brown, soft white, and electric yellow. Horizontal composition, subject in sharp focus against blurred rocky background, shot with a 100mm macro lens, f/2.8, shallow depth of field, natural underwater haze.
Negative Prompt
watermark, logo, readable text, branded aquarium signage, humans, recognizable faces, oversaturated colors, HDR halos, plastic-looking fish, extra fins, distorted anatomy, murky low-detail subject, cartoon style, illustration, artificial frame borders