Fin's Fish Guide
The Alligator gar (Atractosteus spatula) is a brackish-water fish of the family Lepisosteidae that grows up to 305 cm.
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. Giant primitive fish with ganoid armour and alligator-like rows of teeth; breathes air, the roe is poisonous.
Where does the Alligator gar live?
The Alligator gar lives in brackish water and is mostly found around sand or mud bottom. Southern North America; slow-flowing large rivers, swamps and lakes.
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. The razor-sharp teeth of this large fish can cause serious wounds when handling; keep clear of the mouth. Moreover the eggs (roe) are toxic to humans, so do not eat them. Clean any bite wound and seek medical care if it becomes infected.
Is the Alligator gar edible?
Yes, the Alligator gar is commonly eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Atractosteus
More from the family Lepisosteidae
Want the complete picture on the Alligator gar?
Point your camera at the fish and Fin names the species in seconds. Free, and the Alligator gar is one of 12,519 species in the app.