How to choose the color of koi fish?

Koi fish is only black and white, with black and white patches on his head, silvery white all over his body, black patches on his back, and short whiskers on his mouth.

Koi fish fish heads written in white need to have truncated black spots or herringbone patterns. The black spots on koi fish's torso will extend to the abdomen, while the black spots on koi fish's torso will only be on the back. This should be paid attention to when distinguishing koi fish varieties. In addition, the pectoral fin with white writing is mostly white or striped ink, which is directly determined by its growth process.

Appreciation of line drawing mainly lies in two aspects. First, the combination of black and white dots must be aesthetic. Second, the deeper the connoisseur's aesthetic accomplishment, the more he can appreciate the charm of line drawing, which is called "Kung Fu is outside".