Weakly electric fish (IMAGE)
Caption
The sperm of the mormyrid wealy electric fish is the only known vertebrate species that lacks flagellum. Panel A shows a light microscope image of a sperm sample: the sperm are completely immotile. Panel B shows a scanning electron microscope image of a single sperm cell.
Credit
Jason Gallant, Michigan State University
Usage Restrictions
Credit must be given to the creator. Adaptations must be shared under the same terms.
License
CC BY-SA