Question

what is chromatophores?

Answer 1

A pigmented structure found in many animals, generally in the integument. The term is usually restricted to those structures that bring about changes 
in color or brightness.

Answer 2

Chromatophores are pigment-containing and light-reflecting cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.
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