Scientists and fishermen in Brazil caught an “armored” river creature known to sting and discovered a new species, a study said. Photo from Willian Massaharu Ohara via Tencatt, Ohara, Carvalho, and ...

They are visually stunning, hardy, friendly fish that help maintain a healthy, balanced aquarium and are ideal for beginners. So, if you’re considering adding one of these mini catfish to your ...

Almost all of the fish had a “dark mask-like blotch” across their eyes and more blotches down their sides. Several Hoplisoma noxium, or noxium armored catfish, from the aquarium trade.