# WTF Fun Fact – Mandarinfish Can Produce Blue Pigments

The Mandarinfish is one of only two species known to produce cyanophores, which are blue-pigmented, light-reflecting cells, to achieve its blue coloring. Other animals that appear to be blue, such as peacocks, don’t actually produce a blue pigment. They have colorless cells which reflect light making it appear blue. – WTF Fun Facts

Source: https://www.australiangeographic.com.au/blogs/creatura-blog/2015/05/beware-of-the-beautiful-but-poisonous-mandarinfish/