Four ribbonfish or Gymnetrus, circa 1808. From top to bottom, a Russellian gymnetrus, a Cepedian gymnetrus, an Ascanian gymnetrus and a Blochian gymnetrus.  Engraving by J. Pass. (Photo by Hulton Archive/Getty Images)

Four ribbonfish or Gymnetrus, circa 1808. From top to bottom, a Russellian gymnetrus, a Cepedian gymnetrus, an Ascanian gymnetrus and a Blochian gymnetrus. Engraving by J. Pass. (Photo by Hulton Archive/Getty Images)

Download this HD photo of archival, color image, fish, and illustration by Getty Images (@gettyimages)

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