Color vision found in fish that live in near darkness

An international team of researchers discovered a previously unknown visual system that may allow color vision in deep, dark waters where animals were presumed to be colorblind. According to study co-author, Karen Carleton, from the University of Maryland, this means the genes that determine the spectrum of light vertebrate eyes are sensitive to are much more variable and evolve much more quickly than previously thought.
Source: EurekaAlert, https://www.eurekalert.org