Olympia oysters, whose native range runs from Baja California to southern Alaska, are being enlisted as ecological engineers ...

To most anglers, a "sucker" is the last fish they want to see on the end of their line. But to the scientists who study these ...

Almost all animals have symmetrical bodies. Bilateral symmetry is almost universal in all animals and is only very rarely ...

Scientists discover two new Priocharax miniature tetra fish species, one of which is mostly translucent, in Brazil’s Amazon basin in blackwater systems.

Scientists found robust fish with wide mouths, thick lips in swiftly flowing rivers and discovered a new species: North-Prealpine stone loach, study said.

A fish thought to be evolution’s time capsule just surprised scientists. A detailed dissection of the coelacanth — a 400-million-year-old species often called a “living fossil” — revealed that key ...

Scientists found robust yellow fish with slim lips and wide mouths in shallow water of lakes and discovered a new species: lake stone loach, study said.

When these invasive fish take over, they consume the same food sources that native species like walleye, bass, and perch depend on, jeopardizing fish populations that sustain both local fishing ...