Yin-yang koi Taiji symbol (Refined)

Two koi fish swimming in water, forming a perfect yin-yang Taiji pattern. One fish is composed of black ink smoke, the other of white glowing light rays.

Top-down (overhead) view; the two koi form the Taiji pattern, with ripples on the water surface.

Glowing white light rays contrasting with black ink smoke.

Water surface with ripples.

Zen, minimalist.

One fish of black ink smoke, one of white glowing light, ripples on the water. Suggestion: make one hard-light and one soft-light version, then compare before settling on a direction for more reliable results.