Animals
Fish
Whether stream or ocean, the diversity and science of fish goes deep. This is the latest on the science of swimmers.
Latest in Fish
![Anchovy sex is a force of nature](https://www.popsci.com/wp-content/uploads/2024/02/08/school-of-anchovies.jpg?w=800)
Animals
Anchovy sex is a force of nature
![Three common clownfish with orange coloring and white stripes swimming in a sea anemone.](https://www.popsci.com/wp-content/uploads/2024/02/01/clownfish-anemone.jpeg?w=800)
Animals
Can clownfish count?
![All the fish we cannot see](https://www.popsci.com/wp-content/uploads/2023/12/24/mesopelagic-fish.jpeg?w=800)
Animals