Don’t Go Green with Envy, But Fish Might Be Able to Distinguish Color More Effectively Than Humans
Published:18 Oct.2021    Source:University of Sussex

Researchers have revealed that non-mammalian vertebrates might have a much more simple and effective way of deciphering between colour and greyscale information than humans.

 
Tom Baden, Professor of Neuroscience and others from his lab at the University of Sussex were investigating how zebrafish respond and decipher between different wavelengths, or colours of light. Prof Baden said: "Zebrafish, unlike humans, have four types of cone-photoreceptors, specialised neurons in the retina which respond to light. These four types are often called red, green, blue and UV. The assumption is that each should do what it says on the tin -- red should respond to red light, green to green light, and so on. However, we found that this isn't the case."