The World Heaviest Bony Fish

The World Heaviest Bony Fish

As part of Thys's study of the little-known ocean sunfish (Mola mola), a behemoth that can grow more than 4.2 meters (14 feet) long from dorsal fin tip to anal fin tip and 3 meters (10 feet) in horizontal length, she has uncovered a fish that may be a new record setter for the world's heaviest bony fish.

The fish in question is an ocean sunfish that was caught off the coast of Kamogawa, Japan, in 1996 in set nets owned and operated by the Kamogawa Fisheries Cooperative Association. Members of Kamogawa SeaWorld measured the fish to be 2.7 meters (8.9 feet) long and say it weighed 2.3 metric tons (5,071 pounds).

"It is not the longest, but it may be the heaviest sunfish that's actually been measured on a reliable scale," said Thys, who is studying the ocean sunfish in a satellite tagging project supported in part by the National Geographic Society's Committee for Research and Exploration.
 
Top