Two koi fish swimming in a body of water with a tree in the background

best quality, masterpiece, extremely detailed, ukiyo-e, two fish, first fish is a red and white colored beautiful koi, second fish is a black and gold colored beautiful koi, swimming circling each other, yin yang pose, inside lake, reflection of crescent moon, vibrant colors, no chinese characters, no stamp, no logo, no signature

worst quality, low quality, bad anatomy, bad hands, bad body, missing fingers, extra digit, fewer digits