Fantasy fish with translucent fins supported by crystalline structures, resembling glowing emerald and jade. The fish has gemstone-like scales in vibrant green, turquoise, and gold hues, shimmering like precious jewels. The delicate fins sparkle with intricate crystal patterns, creating a magical and ethereal effect. Set against a solid black background to enhance the vibrant details and luminous glow. Minimalistic yet opulent, with a focus on elegance and fantasy design.