There are over 30,000 known fish species in the world, and while not all are suited to captivity, aquarists can choose from over 3,000 species for freshwater and marine aquariums. Bettas and guppies ...

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 ...

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.

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 ...

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 ...

Tiny fish called Trinidadian guppies have individual 'personalities', new research shows. Scientists from the University of Exeter studied how guppies behaved in various situations, and found complex ...

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 ...