Goldfish can see both infrared and ultraviolet light

Photo courtesy: Kazi Faiza Tasnim Neha

A goldfish is the only aquatic animal (or fish) on earth that can see infrared and ultraviolet light. Most goldfish retina ganglion cells and wavelength photopic spectral sensitivity functions reflects both wavelength additive mechanisms and wavelength opponent mechanisms.

Fact Factory Album


The largest snake ever lived was Titanoboa. It grew up to 42ft long and weighed over a ton
There are more than 1.4 billion insects for EACH HUMAN on the planet
Peregrine falcons are the fastest flying birds in the world–they are able to dive at 200 miles per hour
The housefly always buzzes in an F key
The cheetah can run as fast as 120km/h!
Koalas’ fingerprints are so close to humans that they can taint crime scenes
Cows kill more people than sharks
A Grizzly bear’s bite is strong enough to crush a bowling ball
Owls have no eyeballs
An ostrich’s eye is bigger than it’s brain