Shortnose Gar

The Shortnose Gar (Lepisosteus platostomus) is a member of the ancient gar family Lepisosteidae, distinguished among North American gars by having the shortest, broadest snout relative to body length. It inhabits large rivers, lakes, and backwaters of the central United States, primarily within the Mississippi and Missouri River drainages. Like other gars, it is a living representative of a lineage that has persisted with little change for tens of millions of years. It is generally considered stable and widespread throughout its native range, favoring quieter waters away from strong current.

Key identification points for Shortnose Gar:

• Notably short, broad snout, the shortest of any North American gar species
• Slender, elongated cylindrical body covered in hard ganoid scales
• Olive-brown to grey coloring, generally unspotted or lightly spotted on the body itself
• Dark spots present mainly on the dorsal, anal, and caudal fins rather than the flanks
• Rounded tail fin

It is best separated from Spotted and Florida Gar by its much shorter jaw and by the near absence of spotting on the body, with markings largely confined to the fins.

Shortnose Gar occupy large, slow-moving rivers, backwaters, oxbow lakes, and reservoirs throughout the central United States, concentrated in the Mississippi, Missouri, and Ohio River systems. They favor turbid water with slack current, often resting near the surface in quiet pools or along vegetated margins. Like other gars, an air-breathing swim bladder allows them to tolerate warm, low-oxygen water conditions common in silty midwestern rivers during summer months. The species is exclusively freshwater and does not venture into brackish or coastal habitats.

This gar is a solitary ambush predator, hanging motionless near the surface or cover before striking quickly at passing small fish. It regularly rises to gulp air, supplementing gill respiration especially in warm, sediment-laden rivers where oxygen levels fluctuate. Spawning takes place in spring in shallow water with vegetation or debris, where sticky eggs are broadcast and left without parental care. Juveniles rely on cryptic coloration and stillness among cover to avoid predation while they grow into the elongated adult form.