Whale sharks are the largest species of shark. Their gentle manner and massive size make them the gentle giants of the ocean. However, one especially large whale shark has been spotted off the Pacific ...

Atlantic bluefin tuna, the largest tuna species, can reach immense sizes, weighing up to 2,000 pounds. These apex predators ...

Researchers have demonstrated that bluestreak cleaner wrasse (Labroides dimidiatus) checked their body size in a mirror before choosing whether to attack fish that were slightly larger or smaller than ...

Nebraska native George Thompson reeled in a record blue catfish on Oct. 12, breaking the record for the largest caught in Iowa.