Lone tuna all that remains after mass fish deaths at Tokyo aquarium

Tokyo Sea Life Park.

Tokyo Sea Life Park. Image by Guilhem Vellut / CC BY 2.0

Only one Pacific bluefin tuna now remains in Tokyo Sea Life Park’s 30m-diameter tuna tank, following the deaths of more than 150 fish since December last year. The cause of the mass deaths remains a mystery, with researchers investigating a number of possibilities, though the most recent death has been put down to the fish crashing into the tank wall. The large doughnut-shaped tank was considered one of the highlights of the park. Read more: japantimes.co.jp

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