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Alligator Gar

Alligator Gar

Alligator Gar are the largest member of the gar family and among the largest freshwater fish in North America, native to Louisiana waters.

These prehistoric-looking fish are euryhaline and can adapt to varying salinities, making Louisiana's diverse aquatic environments ideal habitat. Louisiana hosts some of the healthiest alligator gar populations in the United States.

Scientific Name: Atractosteus spatula

Physical Characteristics:
  • These prehistoric-looking fish typically reach 6-8 feet and weigh 100-150 pounds, though specimens over 300 pounds and 10 feet long have been recorded.
  • They're distinguished by their broad, alligator-like snout with two rows of sharp teeth, torpedo-shaped bodies, and armor-like ganoid scales that are nearly impenetrable.

What to know

Habitat Distribution

  • Found throughout the state's bayous, lakes, rivers, and coastal areas.
  • These euryhaline fish can adapt to varying salinities, making Louisiana's diverse aquatic environments ideal habitat.

Key Locations

  • Key Louisiana waters include Lake Pontchartrain, Henderson Swamp (7,000 acres of prime habitat), the Mississippi River system, oxbow lakes, and coastal marshes extending into brackish and saltwater areas along the Gulf of Mexico.
  • Prime Louisiana locations include Lake Pontchartrain, Henderson Swamp, Mississippi River oxbow lakes, and coastal areas near New Orleans.

Specific Spots

  • Target areas around lakes, rivers, bayous, swamps, and estuaries with deep cuts, structure, and muddy or clay bottoms.
  • They prefer large, slow-moving rivers with extensive floodplains, reservoirs, bayous, and areas with low oxygen levels due to their ability to gulp air through a specialized swim bladder.

Alligator Gar FAQ

Answers from onWater's species guide.

What are the best lures and bait for Alligator Gar in Louisiana?

For bait, use live or cut shad, mullet, common carp, smallmouth buffalo, shiners, suckers, and perch. Artificial options include soft plastics, spoons bounced along the bottom, and topwater plugs in shallow water.

When is the best time to fish for Alligator Gar in Louisiana?

The optimal time for alligator gar fishing in Louisiana is during hot summer months (July-August) when water temperatures range from 75-85°F, with spring and fall also productive.

How do you catch Alligator Gar in Louisiana?

Popular techniques include jug lines (reducing bycatch), bottom fishing with heavy sinkers, and fly fishing. Use circle hooks with sinkers for bottom presentation. When a gar takes bait, wait several seconds before setting the hook as they often hold and chew bait before swallowing.

What do Alligator Gar eat?

Alligator gar are ambush predators that feed primarily on fish like gizzard shad, carp, and buffalo, but also consume blue crabs in brackish waters, waterfowl, small mammals, turtles, and invertebrates.

Where do Alligator Gar live in Louisiana?

Found throughout the state's bayous, lakes, rivers, and coastal areas. These euryhaline fish can adapt to varying salinities, making Louisiana's diverse aquatic environments ideal habitat.

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