Researchers believe the Warsaw Grouper caught off the coast of Florida is over 50 years old. In fact, it's the oldest specimen the group has ever seen in the ageing program. Agler Jason Boyll caught the mammoth fish in 600 feet of water and immediately posted to Instagram. While this catch is large, it isn't the largest. The largest known Warsaw Grouper caught was 436 pounds, 12 ounces.
Photo: Getty Images