Fishbone is a Dye Marking that gives wajas thin rib-like markings on their chest and tail, as well as a skull like face marking.
Fishbone was released on January 8, 2014. You can add this marking to your waja by use of a Dye Fishbone.
All examples feature wajas with the marking in FF0000 (pure red). However, this marking can come in any Hex Color as well as rainbow (simply put the word "RAINBOW" in the hex field) and chrome (simply put the word "chrome" in the hex field).