This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
PSM Piked dog fish with the apertures of the gill pouches. Piked dog fish with the apertures of the gill pouches archive org Popular Science Monthly Volume Author PDold Popular Science Monthly illustrations Respiration
Page 2023 Free-images.com. All images are Public Domain