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Alligator gar (Atractosteus spatula) — Lepisosteidae

Alligator gar

Atractosteus spatula
Family: Lepisosteidae
LC · Least Concern

The Alligator gar (Atractosteus spatula) is a brackish-water fish of the family Lepisosteidae that grows up to 305 cm.

Length
305 cm
Water
Brackish
Depth
0.0–? m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Commonly eaten

Description

The alligator gar is one of the largest freshwater fishes of North America, an ancient fish of the gar family (Lepisosteidae). The species can reach about three metres and has an elongate body armoured with hard, rhomboid ganoid scales and a broad, short snout with two rows of razor-sharp teeth that recalls an alligator. It inhabits sluggish pools and backwaters of large rivers, swamps and lakes and can breathe air with its swim bladder. As an ambush apex predator it hunts mainly fishes. Though not aggressive, the teeth can cause serious wounds and the eggs are toxic to humans; do not eat the roe.

Frequently asked questions

How do you recognise the Alligator gar?

The Alligator gar has an elongate, eel-like body, is mainly brown and shows a plain pattern.

Where does the Alligator gar live?

The Alligator gar lives in brackish water and is mostly found around sand or mud bottom.

How big does the Alligator gar get?

The Alligator gar grows to a maximum of about 305 cm. On average the species is around 200 cm.

Is the Alligator gar dangerous to humans?

No, the Alligator gar is harmless to humans.

Is the Alligator gar edible?

Yes, the Alligator gar is commonly eaten.

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All data

Identification

Dutch name
Alligatorgar sourced
English name
Alligator gar verified
Scientific name
Atractosteus spatula
Family
Lepisosteidae
Other names
Alligator gar; Gemfish verified

Appearance

Size class
Extra large verified
Max length (cm)
305.0 verified
Average length (cm)
200.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Plain inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
0.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Atractosteus

More from the family Lepisosteidae

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