The best types of fish for first-time owners are fuss-free, easy to maintain, and hardy. Packed full of color, character, and ...

Threadfin Rainbowfish are delicate, slender fish with long, flowing fin extensions. They’re peaceful, top-swimming fish that ...

The phenotypic males and females had testicular and ovarian structures, respectively, but lacked germ cells. Gene expression patterns in these male and female germ cell-deficient gonads were ...

Scientists found a “thick”-lipped creature in a “swiftly flowing” river of Switzerland and discovered a new species, a study said. Photo from Calegari, Freyhof, Waldock, Wegscheider, Josi, Rüber and ...

Betta fish are known for their stunning colors, elegant fins, and yes, their attitude. These feisty little swimmers are often ...

Loaches include a wide variety of fish, but are typically small and found in freshwater systems. They are typically nocturnal ...

Natural resources experts explain why a particular fish is thriving in Lake St. Clair, creating the best fishing in the lake in at least 50 years.

The fish, which can survive short periods of time in low-oxygen conditions by breathing air, is an invasive species.

The fish, which can survive short periods of time in low-oxygen conditions by breathing air, is an invasive species.

McDonald's just announced a new twist on a classic menu item, the Filet-O-Fish for the very first time since it launched in UK 50 years ago.

The food recall was issued over fears concerning a rare and life-threatening condition, botulism.