![]() They are melanoid axolotls, which means they completely lack all light reflecting skin pigmentation, called iridophores, and have a surplus of dark skin pigmentation! They are also axanthic, so they lack all yellow pigmentation, called xanthophores! And they are also copper, so the skin pigment that should be black, eulmelanin, is instead reddish brown, pheomelanin, resulting in the axolotl you see above! It takes careful tracking and determination of genetics, bloodlines, and selective breeding to produce a Melanoid Axanthic Copper axolotl! The difficulty in breeding the correct genes, as well as the fact that melanoid axolotls have weaker immune systems due to a lack of pteridines, make these axolotls one of the rarest morphs in the world! MACs are one of the rarest axolotls that can be selectively bred because they express three recessive traits simultaneously. ![]() Melanoid axanthic copper axolotls, or MACs, are gorgeous axolotls! They are a beautiful lavender-hued brown whose gills can become a deep magenta when “fired up”. Each and every axolotl is a unique individual, but some possess colorations that are more rare than others! In this article we will talk about the most rare axolotl morphs in the world and what makes them so unique and difficult to find! Melanoid Axanthic Copper Axolotl Axolotl colors are determined by their genetics, and the morph name is usually chosen by breeders in a way to help people quickly understand what specific genes are being expressed by an axolotl. ![]() A morph is not a true scientific identifier, but it is the common term used by axolotl breeders and enthusiasts all around the world to describe a specific axolotl color, or phenotype.
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