Invasive catfish species, particularly blue catfish (Ictalurus furcatus) and flathead catfish (Pylodictis olivaris), have emerged as significant drivers of ecological change in many freshwater and ...

In a muddy river of eastern Ecuador, an “armored” creature swam along searching for wood debris to sink its “spoon-shaped” teeth into — or at least, that’s what it tried to do. Visiting researchers ...

In a river of eastern Brazil, an “armored” creature swam along searching for the next meal to sink its “copper colored” teeth into. But it wasn’t the only one searching. Passing scientists scooped up ...

The catfish are dark green or black, with a paler belly. Similar to other catfish species, they have long, eel-like bodies and flat heads with wide mouths. They have two long barbels on the upper jaw ...

Museum ichthyologist Cristhian Conde-Saldaña uses evolutionary genetics to study freshwater fishes and document at-risk biodiversity Erin Wunderlich Researchers working with Cristhian Conde-Saldaña ...

Scientists found an “armored” creature with “copper”-colored teeth in mountain rivers of Brazil and discovered a new species, a study said. Photo from Uzeda, Paiola, Cesar, Okubo, Marques-Frisoni, ...