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 ...

A single female guppy can produce a new batch of fry every four weeks, and she can do it without a male present in the tank.

Guppy fish are colorful, active, and incredibly easy to care for — making them one of the most popular freshwater fish for aquariums worldwide. Whether you’re a beginner setting up your first tank or ...

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.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. How people respond to stressful situations can say a lot about their ...

Are you thinking of keeping fish as pets but don’t know where to start? Take a look at two of the most popular choices for beginners - Guppy fish and Swordtail fish. Here are the reasons why these ...

The purchase of the first aquarium brings a lot of excitement. Choosing the first pet is not always easy because of the variety of different species of fish that can be purchased. Some of the fish ...

When Robert Heathcote dips his head into the rivers of Trinidad, he’ll often see little black dots moving through the water, even when it’s murky. Those dots are the eyes of small, inch-long fish ...

Male guppies pay a high cost for their sexual harassment of female guppies – including much higher mortality rates – a new study from Macquarie University has found. Sexual harassment in guppies, or ...

For female guppies, there’s more to life than making babies. A new study finds that guppies experience menopause just like humans and other animals. The study is the first demonstration of menopause ...

Trinidadian guppies, ubiquitous in freshwater aquariums around the world, are no bigger than your thumb. But for Sarah Fitzpatrick, assistant professor in Michigan State University's Department of ...