Original Source: Davis, M.P., Sparks, J.S., and Smith, W.L. (2016). Repeated and Widespread Evolution of Bioluminescence in Marine Fishes. PLOS ONE. 11(6): e0155154.

  A preserved Black Dragonfish ( Idiacanthus ) with bioluminescent barbel.

A preserved Black Dragonfish (Idiacanthus) with bioluminescent barbel.

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