Despite new clues, this ancient fish has stumped scientists for centuries
Cross a boomerang, a ribbon and a fish, and you might get Pegasus volans
![An illustration of a an eel-like fish with very long fins above and below its body and a transparent sac dangling from its abdomen](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/08/082724_sc_larva-fish_feat.jpg?resize=1440%2C810&ssl=1)
An artist’s reconstruction shows what Pegasus volans — or, at least, the front half of it preserved in the fossil record — might have looked like in life, complete with guts that hang externally from the main body.
Margaux Boetsch