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 ...

In a forested region of Angola where a cliff separates the landscape, a new species of butterfly was discovered. /iStockphoto ...

They took a closer look at the fish and realized they’d discovered a new species: Hoplisoma noxium, or the noxium armored catfish. Several wild-caught Hoplisoma noxium, or noxium armored catfish.