robust” teeth while females have “slender and more numerous teeth.” Sapucaí River armored catfish live in shallow stony streams with “crystal-clear waters” and a “rapid flow,” the ...

They are distinguished from other large catfish species by their near-total lack of barbels, or “whiskers,” as well as by the absence of teeth. (Juveniles have barbels, but these features ...

The world’s most dangerous fish, including Pufferfish and Lionfish, are capable of inflicting serious wounds to humans.