Name of yellow and white marble tang?

[yellowtruck75]

I saw a few videos of people's tanks that had a yellow tang but it was white also. It looked like a marbled white and yellow tang. Is this a breed of tang or just a defect?

 

[savemyreef]

Genetic defect

 

[Baldwin]

Piebald tang

 

[MrTuskfish]

Piebald tang with a genetic defect. (Pretty good guess with no pic, huh?)

 

[humaguy]

and depending on the cause most likely the fish will grow into their "normal" coloration...