Faced with rising feed prices, the Hakone-en Aquarium in western Kanagawa tried to switch to cheaper mackerel to make ends meet. But resident emperor penguins and Asian short-clawed otters refused to eat the discounted fish, forcing keepers to revert to the more expensive Japanese saffron, also known as aji. The aquarium, home to 32,000 animals including sharks and seals, is feeling the pain from rising food prices, aji costs have risen by up to 30 percent since last year YOUTUBE “The two types of fish are similar species and penguins, a bit like humans, seem to have different tastes,” said Ryo Sato, a spokeswoman for the aquarium. “Some of them will eat the new food and some won’t.” The aquarium, where it is located
