The color is in bone
Mucin is the substance in cartilage and molegular in it has component is copper,
this brings alcianblue is blue in color.
Fish were preserved in a solution of glycerine 100%.
Alizarin red S can reaction with Calcium, that is component in bone, its result is magenta.
Fish were preserved in a solution of glycerine 100%
The viscosity and thus resist shake well.