Bluefin tuna rancher Umami Sustainable Seafood said higher sales prices and a strong Japanese yen drove a 53 percent hike in its revenues per kilo in its third fiscal quarter.

The US-listed company, which operates bluefin tuna farms in Croatia and Mexico, said it made average revenues of $29.15 (€22.9) per kilo of tuna sold in the quarter -- compared to $19 (€14.9) per kilo in the same quarter last year.

For the nine months ended on March 31 this year, the average revenue was up 29 percent to $25.94