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.

The European catfish is the largest freshwater fish in Europe, reaching up to 2.8 meters in length and 130 kg in weight. It ...