THIS is the mind-bending puzzle that puts your vision and intelligence to the test If you can spot the flat ... Your eyes can easily become mesmerised by the maze of circles and spokes.

The researchers measured intelligence of the male mosquitofish by putting them through a series of underwater tests – including navigating mazes, detouring around transparent barriers and ...

So, the relative intelligence of many fish can be judged to a large degree by how well they’re able to navigate an aquatic environment. Aquarium maze tests and test routes are one of the best ...

The researchers measured the intelligence of the male mosquitofish by putting them through a series of underwater tests—including navigating mazes, detouring around transparent barriers and ...