2 Types of Kumonyru

• The blue skin Kumonyru. Many hobbyist think they will develop sumi and turn all black in the future but instead it will turn lighter and lighter as it grow. The pattern develop from under the blue skin and no one can tell how the pattern is going to be. The pattern will be more stable when the fish mature but it can continue changing.
• The white/light blue skin kumonyru. This type it is easier to see when it is a tosai because you can see sinking sumi cut across white or light blue skin. It is similar to doitsu shiro utsuri. The sinking sumi will develop sumi in the future but it can disappear and reappear year to year until the fish mature and then it will be more stable but it still can change all its life. The white skin part of the fish will never develop sumi.

sumber : Hikarikoifood