Correct, calling them colorblind is a misnomer. Most insects also can’t see red though. They can see ultraviolet spectrum which is pretty cool
Trichromatic vision is primates (humans, apes, monkeys, lemurs) giving red and green
Birds, reptiles, fish, crustaceans often have tetrachromatic vision which gives more vibrancy to color. Some of these can also see the uv spectrum too
Fun fact: there are some people who have tetrachromatic vision. It’s a genetic mutation on the X chromosome so those born with 2 X chromosomes are far more likely to have it (~15% vs ~8% for xy). just having the mutation doesn’t mean you’ll have functioning 4th cone cells though. And it’s one of those “you were born this way so functionally you will always have seen the world this way” kind of things
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Yes, they see some color
Correct, calling them colorblind is a misnomer. Most insects also can’t see red though. They can see ultraviolet spectrum which is pretty cool
Trichromatic vision is primates (humans, apes, monkeys, lemurs) giving red and green
Birds, reptiles, fish, crustaceans often have tetrachromatic vision which gives more vibrancy to color. Some of these can also see the uv spectrum too
Fun fact: there are some people who have tetrachromatic vision. It’s a genetic mutation on the X chromosome so those born with 2 X chromosomes are far more likely to have it (~15% vs ~8% for xy). just having the mutation doesn’t mean you’ll have functioning 4th cone cells though. And it’s one of those “you were born this way so functionally you will always have seen the world this way” kind of things
There’s a theory that Monet was able to see ultraviolet. Because of some surgery.