Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why ...

For some, the idea of owning a shark in a home aquarium sounds thrilling. However, keeping a pet shark is far from a simple endeavor. From legality to maintenance challenges, not to mention the ...

The groupers, fat and about two feet long, are not alone: Hundreds of gray reef sharks assemble as well, to stalk them. The female groupers, like other reef fish, spend at most a few days in the ...

Getty Images/iStockphoto Months after endangered gray nurse shark Mary-Lou was seen participating in mating activities in an Australia aquarium, the ocean predator welcomed a “surprise” pup ...