A bluefin tuna actually has two colors. The upper half or back of the fish is dark blue while its lower half or belly is white.

More than its colors, the bluefin is coveted for its size because the bigger the catch, the higher its price. In fact, a 276-kilogram bluefin tuna was bought for a whopping 207-million yen, or $1.3 million, at Tokyo’s main fish market on 5 December.

The Onodera Group, which operates Michelin-starred sushi restaurants, bought the fish. The same group paid 114-million yen for the top tuna last year.

Meanwhile, a shopper stumbled on an unusual-looking denizen of the sea in a grocery store in Milbridge, Maine, USA last month.

The shopper bought the seafood and named it Arnold Clawmer before taking it to the Shaw Institute Environmental Education Center in Blue Hill on Christmas Eve.

The Shaw Institute said the split lobster’s rare condition was caused when two fertilized eggs fused together, New York Post reports.

It said that Arnold’s colors — red on the left side and mottled brown on the right — was a characteristic that happened in one in 50 million lobsters.