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.

The suckermouth catfish (Hypostamus plecostomus), also ... may be useful to those with fish tanks but in the wild, it becomes territorial and breeds rapidly. Often, when these fish grow too ...