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 ...

Biologist Mike Ross, balanced in a canoe beneath a star-filled sky in central Zambia, slaps the water with a net attached to ...

Scientists found a predatory fish with sharp teeth, white eyes in rivers, lagoons and discovered new species: Castellón’s piranha, study said & photo shows.

Researchers in Zimbabwe identified two new catfish species, the rough skin and dwarf suckermouth, in highland rivers like the Buzi and Pungwe river systems.