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 ...

The yellow and blue fish didn’t look like any known species. Two Channa nachi, or Farham’s snakehead fish, as seen in an aquarium. Photos shared by Jayasimhan Praveenraj Praveenraj and a team ...

Wild-caught fish were usually “light brownish orange,” while aquarium-bred fish were a paler “greyish yellow.” Almost all of the fish had a “dark mask-like blotch” across their eyes ...