These are called scutes and they’re very tough. These fish have a row of large scales running down the middle of their back. They have a long, thin body that can reach lengths of up to 10 feet! The Alligator Gar is one of the most intimidating freshwater fish out there. They’re also not the easiest fish to care for, so it’s important to do your research before getting one. If you’re interested in keeping one of these fish as a pet, it’s important to note that they require a very large tank (at least 200 gallons). They’ve been known to attack and kill humans on occasion, which is something to be aware of if you live in an area where they’re present. This could be anything from ponds and lakes to marshes and swamps.ĭue to their size and the fact that they’re a predator, alligator gars can be quite dangerous. They are the largest freshwater fish in the entire country and can grow to be quite large (up to 10 feet in length)!Īlligator gars prefer slow-moving waters with a lot of vegetation. ![]() ![]() states where it was previously lost.Alligator gar (scientific name: Atractosteus spatula) are a type of fish that’s native to North America, primarily in the southern United States. There have also been efforts to reintroduce the alligator gar to some U.S. The fish is protected by law in parts of its range. In fact, the alligator gar itself has become a popular target fish for anglers, especially bowfishers, which is of concern to some conservationists. Biologists have shown that the species presents no threat to game fish. In recent years, however, the alligator gar’s reputation has improved and the fish has undergone something of an image makeover. Resource managers commonly recommending culling them, and throughout the 20th century the alligator gar numbers plummeted, with only Texas and Louisiana maintaining stable populations. In the past, the gars developed a bad, but largely undeserved reputation as “trash fish” among anglers who believed they damaged nets and devoured game fish. The toxicity of gar eggs serves as a defense mechanism against predators such as crustaceans.Īlligator gars have few natural predators, though alligators have been known to attack them, and young fish are preyed upon by other species.Īdult alligator gars primarily prey on fish, but they are opportunistic feeders who also eat blue crabs, small turtles, waterfowl or other birds, and small mammals. They can pose a passive danger, though: The fish’s eggs are poisonous to humans if ingested. DefensesĪlthough they may look ferocious, alligator gars pose no threat to humans and there are no known attacks on people. It may obtain as much as 70 percent of the oxygen it needs from the atmosphere. It also allows the fish to gulp air to “breathe” in waters with low oxygen. The fish’s thick, spongy, and highly vascular air bladder behaves like a lung to aerate the alligator gar’s blood. Today alligator gars are known only to live in the lower Mississippi River Valley, from Oklahoma to the west, Arkansas to the north, Texas and portions of Mexico to the south, and east to Florida.Īlligator gars are able to tolerate brackish and even salt water, but they prefer the sluggish pools and backwaters of large rivers, swamps, bayous, and lakes. Alligator gars were historically found throughout the Mississippi River Valley and may have even existed as far north as Iowa and as far west as Kansas and Nebraska. Today, however, gars live only in North and Central America. The prehistoric relatives of the species first appeared 157 million years ago and inhabited many parts of the world. (The white sturgeon is often considered North America’s largest freshwater fish, but it spends substantial time in salt water.) Range and habitat ![]() This makes it the largest fish species in North America that spends almost all its time in freshwater. It can grow up to 10 feet long, and historical reports suggest it may grow to weigh nearly 350 pounds. The largest of seven known gar species, this megafish has a torpedo-shaped body in olive brown and comes armored with glistening scales. The alligator gar bears no relation to alligators, but with its wide, crocodilian head and razor-sharp teeth, it’s easy to see how this giant fish got its name.
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