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Longnose Gar

Longnose Gar

Longnose Gar are common, native fish found statewide throughout Illinois.

These prehistoric fish are opportunistic ambush predators that are most active during summer's hot days when other fish retreat to deeper waters, as they can breathe air through specialized swim bladders and tolerate low oxygen conditions.

Scientific Name: Lepisosteus osseus

Physical Characteristics:
  • They typically grow 3-5 feet long with females being larger than males, featuring olive-brown backs that fade to white bellies with dark spots on back, anal and tail fins.
  • These prehistoric fish have elongated snouts twice the length of their heads, filled with needle-like teeth, and are covered in diamond-shaped ganoid scales that form armor-like protection.

What to know

Habitat Distribution

  • Found statewide throughout Illinois in large rivers and lakes, usually near aquatic plants.

Key Locations

  • Major river systems including the Mississippi, Illinois, Ohio, Kaskaskia, and Fox Rivers, as well as lakes like Rend Lake, Clinton Lake, and various impoundments throughout the state.
  • Mississippi below dams, Illinois River backwaters, Fox River in low-gradient segments above Algonquin Dam and deeper pools below Dayton Dam.

Specific Spots

  • Prefer sluggish pools, backwaters and oxbows of rivers, streams, and lakes, often found near vegetation and submerged structures.
  • Target backwaters and oxbows of major Illinois rivers and slack water areas near vegetation in lakes.

Longnose Gar FAQ

Answers from onWater's species guide.

What are the best lures and bait for Longnose Gar in Illinois?

Live or cut minnows, small fish, and cut bait fished under bobbers or on bottom rigs. Spinnerbaits, topwater lures fitted with frayed nylon rope or yarn work well as the strands tangle in their teeth.

What flies work for Longnose Gar in Illinois?

Rope flies (hookless flies made of unbraided nylon rope) are highly effective - 6-9 inch rope flies.

When is the best time to fish for Longnose Gar in Illinois?

Summer's hot days (July-August) when they're most active. Spawning occurs in spring from May through June when adults move from lakes and rivers into smaller streams - during this period they should be left undisturbed.

How do you catch Longnose Gar in Illinois?

Sight fishing is highly effective. A sideways hookset is more effective than an upward motion. For rope flies, cast 6-9 inch rope flies past their nose and let them chew before applying pressure, as their bony mouths make hook penetration difficult. Be patient as gar can be selective.

What do Longnose Gar eat?

Opportunistic ambush predators that primarily feed on a broad variety of fish including gizzard shad, shiners, bluegill, channel catfish, freshwater drum, and various minnows. They also consume large invertebrates when abundant, and young gar feed on insect larvae including mosquitoes early in life.

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