The cardinal tetra is one of the most popular pet fish in the world. They look like little red and blue sequins. You've ...

When Becky O’Brien dangles herring over a tank of over a dozen swimming sharks, it only takes seconds for a zebra shark to snatch the fish from her tongs. The lead aquarist said ...

Rainbow belly pipefish share an uncanny resemblance to seahorses. This is no coincidence. The species are related and similar ...

Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

Discover that pet fish can be long-term companions, living for decades with proper care. Beyond decoration, these aquatic friends offer entertainment and calm, bringing joy and life to your home.

Some dogs might be totally oblivious to any pet fish who may also live in their house, but others end up completely mesmerized, seeing their finned family members swimming around an aquarium. Even for ...

An unseasonably high amount of sargassum seaweed is currently in the Atlantic Ocean. While generally safe to swim in, large quantities of sargassum can be unpleasant for beachgoers. The proliferation ...

A New Hampshire woman creates a floating harness to help her ill goldfish Mr Sue swim again after months of struggling.

Swimming in a pond filled with massive pet piranhas is not for the faint of heart. These powerful fish are known for their sharp teeth and aggressive feeding behavior. Entering their environment ...

Fish use body waves to swim, but the portion of the body involved in undulation varies across species. Anguilliform fish undulate most of their bodies, enabling high maneuverability but limiting speed ...