The ruby seadragon (Phyllopteryx dewysea) is a marine fish in the family Syngnathidae, which also includes seahorses.

[2][3][4] The team that discovered this species named the marine fish after its color.

[5][4] In April 2016, researchers used an underwater camera to film a video of a live specimen for the first time, publishing their findings in January 2017.

[8] Based on records, many assumed that the ruby seadragon normally lives at depths beyond normal scuba range and diving limits, which may explain why it went undiscovered for so long.

[4] Scientific papers have been published by researchers from the University of Western Australia and also the Scripps Institution of Oceanography in San Diego.