A bioluminescent fish, the central subject, is depicted in a dark, cosmic setting. The fish has a slender, eel-like body with large, expressive eyes, long barbels, and elaborate, fan-like fins. Its scales and fins radiate a vibrant blue and teal glow, interspersed with sparkling, stardust-like particles. The fish is positioned slightly off-center, angled to the right, giving the impression of graceful movement through a dark, deep-sea environment. The background is a deep, inky blue dotted with faint, small points of light, suggesting stars or other celestial bodies. The composition is close-up, highlighting the fish's intricate details, especially its luminous fins and skin texture. The image has a dreamy, ethereal quality, combining elements of fantasy and marine life, evoking a sense of wonder and the mysteries of the deep ocean. Lighting emphasizes the luminescence of the fish, creating contrast and emphasizing the details. The atmosphere is otherworldly and magical.