Duping a guppy is easier than duping a ring dove — at least when it comes to a classic optical illusion.

Guppies can be fooled by optical illusions into believing objects are smaller or larger than they really are. This suggests they might not always make the best choices in their natural environment.

Scientists tested two species against each other to see which was more likely to fall for an optical illusion.

A new study reveals guppies are easily tricked by optical illusions, while ring doves see clearly, highlighting differences ...

Guppies are beginner-friendly, low-maintenance fish that thrive in a 10-gallon tank, with a peaceful temperament and omnivorous diet. Males are smaller with vibrant colors, while females are larger ...

Are you new to fish-keeping and planning to start an aquarium? Well, while keeping an aquarium at home needs efforts and time ...

Trinidadian guppy fish have varying levels of self-control, scientists have found (University of Exeter/PA) Just like humans trying to stick to New Year’s resolutions, guppies have varying levels of ...

Tiny guppy fish change their eye colour to warn off rivals, new research shows. When facing an opponent, Trinidadian guppies rapidly turn their irises from silver to black before attacking their ...

Canadian evolutionary scientists say claws are used by the male guppy fish to treble the amount of sperm transferred to reluctant females Added the species has evolved to benefit males at the expense ...