Nature often puts on incredible displays. A recent example caught on camera shows thousands of bumblebee catfish (Rhyacoglanis paranensis) climbing waterfalls in southern Brazil. This is the first ...

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, ...

Invasive species like the blue catfish and snakehead are threatening ecosystems across Maryland’s waters. Chefs say that if we can’t beat ’em, we should eat ’em. These species vary considerably from ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Flatheads grow fast in this river system, attain large body sizes and can eat a variety of prey. Because adult flatheads have few ...

In a river of southern China, a large predator with “thick” skin rested on the riverbed and waited for its next meal. Its “small” eyes scanned its surroundings, but it wasn’t the only one looking ...