The first new species was Rachycentron blochii, or the blotchy cobia, the study said. These “torpedo-shaped” predators measured about 3 feet long and weighed about 8 pounds. They had “small” eyes, ...

They wanted to study the region’s black king cobia, or Rachycentron canadum, a type of “large” fish popular commercially, they wrote in a study published Oct. 30 in the peer-reviewed journal ...