Eumecichthys fiski //

The unicorn crestfish lives in open water at around 1000 m (3300 ft) deep. Despite its slender body, fossils suggest that its early relatives looked more like their shorter, round-bodied cousin, the opah.

https://t.co/T8lXEbS5WF

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This specimen is unusual not only in its disk-like proportions and awkwardly protruding fins. It's warm blooded too.

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Eumecichthys fiski // Franz Anthony
Despite its slenderness, the unicorn crestfish's ancestor looked like its round-bodied cousin, the opah.

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