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  • Longfin eel swimming in the Waikato River, New Zealand.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 1 July 2013 Size: 160 KB Referencing Hub media

    Numbers of tuna – longfin eel (Anguilla dieffenbachii) have declined sharply, and the species faces extinction.

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