Mantis Shrimps have 12 color photoreceptors while humans have 3... but how do they use them? The current hypothesis is that the eyes do most of the work, picking up 12 different colors, while the brain is doing less of it.
The story of Mantis Shrimp eyes is bigger than a single short, find more here:
https://www.nature.com/articles/natur...
https://www.washingtonpost.com/news/s...