Preferring weedy, quiet waters, this species of gar averages .6 to .9 m (2 to 3 feet) in length, but can reach a length of up to 1.5 m (5 feet). Its long snout makes it easy to identify. The gars have very hard scales, composed of a compound called ganoin. They do not overlap like most fish, instead their scales fit together like bricks in a wall. Indians used the scales of the larger gars for arrowheads and today the durable hides are sometimes used to make luggage.

At times, fisherman have mistaken the gar for a log as it floats near the surface. Although the gar is usually quite slow-moving, it can move quickly when chasing its food.