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 ...

He calls it the "Gup Thrust." It's somewhere between hilarious and obscene, something Elvis Presley might have tried if he could send 10 pins flying into the pit like Guppy Troup does. He's executed ...

Scientists have long suspected that big brains come with an evolutionary price — but now they've published the first experimental evidence to support that suspicion, based on their efforts to breed ...

Forget everything you know about feeder guppies—this one is an absolute unit. Watch it dwarf the others and go wild at feeding time. It’s not just big… it’s insane. Fort Stewart active shooting, base ...

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.

A long-term fish experiment reveals how a mechanism called density dependence, in which the population growth rate slows as the number of individuals rises, affects population dynamics on time scales ...