About This Lesson
We all know fish can’t breathe, or well, at least not in the same way we do.
Some fish out there don’t need lungs to breathe air. One fish family, the anabantids, has evolved a special structure called a “labyrinth organ” that actually lets them breathe air through their heads! Although the labyrinth organ isn’t a real lung like humans have, it’s a pretty complicated organ. It’s really just a backup for the fish’s gills.
Why would fish develop something that complicated just as a backup?
needs a video