A new discovery could help save this 10-foot-long 'living fossil' fish 
By Jason Bittel UK Source: nationalgeographic 2/17/2022
Jason Bittel
Credit: Charles Carpenter/Field Museum Library/Getty Images
The alligator gar is a snaggle-toothed fish longer than a park bench and heavier than a mountain lion. Bony scales covering its body make it look like an armoured dinosaur, and for good reason: North America’s second-biggest fish has been thriving since the late Jurassic period, 157 million years ago.

Many don’t realise that the 10-foot-long alligator gar still exists, but when they do, their first thoughts often turn to fear, says Solomon David, a fish ecologist at Nicholls State University in Louisiana.
 

But “they’re not like alligators, lions or other animals that can tear off pieces of prey,” says David. “They have to swallow their prey whole, so they’re harmless to humans.”

Alligator gar, which can weigh more than 300 pounds, are like their namesake in one way: They’re apex predators, which means they provide critical ecosystem services to their home habitats—which is mostly the middle and lower Mississippi River watershed in the U.S. The freshwater species keep prey populations in check by hunting smaller fish, amphibians, reptiles, mammals, and birds, David says.

 
Mississippi River Gar, Alligator Continue...

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