Scientists make remarkable observation in foreign waters: 'We don't know if there were fewer ... or if they simply disappeared'

Scientists make remarkable observation in foreign waters: 'We don't know if there were fewer ... or if they simply disappeared'

A shift in natural behavior by an established predator could help control an invasive fish species found in Brazilian waters.  Research published in the journal Environmental Biology of Fishes described the intriguing activity of lemon sharks: They are now hunting a problematic freshwater fish.  According to an article from FAPESP shared by Phys.org, this shark is often found in Sueste Bay, a sea inlet where fresh water from a nearby mangrove sw…