When most people think about biodiversity in lakes and rivers, they imagine fish, plants, or perhaps birds and amphibians.

Cherry barb fish are a great addition to any tank. They are a fun, easy to care for, vibrant species and are beautiful to observe. Not long after they were discovered, cherry barbs became popular with ...

Species are fizzling out of existence at a rate faster than any other time in human history—and no one is more aware of that fact than National Geographic photographer Joel Sartore. After 13 years of ...