Science News | See iridescence in ghost catfish | Science News @ScienceNewsMag | Uploaded March 2023 | Updated October 2024, 7 hours ago.
When backlit with a white light, the mostly transparent ghost catfish becomes iridescent. Microscopic striped structures in the fish’s muscles diffract the light, separating it into different wavelengths. These structures change in length as the fish swims, causing the rainbow colors to flicker.
Read more: sciencenews.org/article/transparent-fish-rainbow-light-iridescent
Video: X. Fan et al/Proceedings of the National Academy of Sciences 2023