The ultra-black Pacific blackdragon (Idiacanthus antrostomus) is the second-blackest fish studied by a research team of scientists from Duke University and the Smithsonian.
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The Ultra-Black Pacific Blackdragon
![The ultra-black Pacific blackdragon forms a circular shape with its body.](/sites/default/files/styles/3_2_large/public/2023-11/Karen_-_Idiacanthus_1450747-25sm_%282%29.jpg.webp?itok=tGzmIDyJ)
The ultra-black Pacific blackdragon (Idiacanthus antrostomus) is the second-blackest fish studied by a research team of scientists from Duke University and the Smithsonian.