Why Are Some Mahi Mahi Blue?
Some Mahi Mahi fish turn blue because of the stress they experience during their battle with fishermen. This stress results in a rapid buildup of lactic acid in their muscles, which reacts with the protein in their skin to change its color from green and gold to blue. However, Mahi Mahi can also have blue iridescent scales, which is a natural trait caused by the way the scales reflect the sunlight.