300kg bluefin tuna caught in Wakayama Pref.

A giant bluefin tuna was caught off Wakayama Prefecture, western Japan, on Thursday.

The tuna weighed 311 kilograms and was 250 centimeters long. It was caught in waters off Nachikatsuura Town. Bluefin tuna are caught there from January to May.

At the auction for the year's biggest catch, bidders checked the color and fat of its tail flesh.

The fish sold for over 2.8 million yen, or around 31,000 dollars.

Fisherman Mutsuo Tsuno said he is happy to have caught such a big tuna, known as diamonds of the sea.