{{Taxobox
| name = American eel
| image = anguillarostratakils.jpg
| image_width = 200px
| regnum = Animalia
| phylum = Chordata
| classis = Actinopterygii
| superordo = Elopomorpha
| ordo = Anguilliformes
| familia = Anguillidae
| genus = ''Anguilla''
| species = '''''A. rostrata'''''
| range_map=Rostratamuk.jpg
| range_map_caption=Range map
| binomial = ''Anguilla rostrata''
| binomial_authority = Le Sueur, 1821
}}

The '''American eel''', ''Anguilla rostrata'', is a catadromous fish found on the eastern coast of North America. It has a snake-like body with a small sharp pointed head. It is brown on top and a tan-yellow color on the bottom. It has sharp pointed teeth but no pelvic fins. It is very similar to the European eel, but the two species differ in number of chromosomes and vertebrae.

thumb|left|230px|Juvenile eels.
The spawns in eggs to hatch. After hatching, young eels move toward North America and enter freshwater systems to mature. The female can lay up to 4 million buoyant eggs a year, but dies after egg-laying.

The eel likes fresh water, and is found around the Atlantic coast including Chesapeake Bay and the Hudson River. It prefers to hunt at night, and during the day it hides in mud, sand or gravel.

American eels are economically very important to the East Coast and rivers where they travel. They are caught by fishermen and sold, eaten, or kept as pets. Eels help the Atlantic coast ecosystem by eating dead fish, invertebrates, carrion and insects. If hungry enough, it will even eat its own family.

Although many anglers are put off by the snake-like appearance of these catadromous fish, eels are in fact exceptionally good fish. They are usually caught by anglers fishing for something else. The world record weight for the American eel is 9.25&nbsp;pounds.

<!-- Für Informationen zum Umgang mit dieser Tabelle siehe bitte Wikipedia:Taxoboxen. -->
{{Taxobox
| Taxon_Name       = Amerikanischer Aal
| Taxon_WissName   = Anguilla rostrata
| Taxon_Rang       = Art
| Taxon_Autor      = Lesueur, 1817
| Taxon2_Name      = Flussaale
| Taxon2_WissName  = Anguilla
| Taxon2_Rang      = Gattung
| Taxon3_Name      = Flussaale
| Taxon3_WissName  = Anguillidae
| Taxon3_Rang      = Familie
| Taxon4_WissName  = Anguilloidei
| Taxon4_Rang      = Unterordnung
| Taxon5_Name      = Aalartige
| Taxon5_WissName  = Anguilliformes
| Taxon5_Rang      = Ordnung
| Taxon6_Name      = Echte Knochenfische
| Taxon6_WissName  = Teleostei
| Taxon6_Rang      = Überordnung
| Bild             = Amerikanischer Aal.jpg
| Bildbeschreibung = Amerikanischer Aal (''Anguilla rostrata'')
}}

Der '''Amerikanische Aal''' (''Anguilla rostrata'') ist ein Europäischen Aal (''Anguilla anguilla''), von dem er äußerlich praktisch nicht zu unterscheiden ist. Frühere Biologen nahmen an, dass es sich um eine Art handelt, aber neuere Untersuchungen haben gezeigt, dass er in der Chromosomenzahl und verschiedenen genetischen Markern unterschieden ist. 

Der Lebensraum der erwachsenen Fische liegt in den Seen, Flüssen und Bächen Atlantik. Während der Wanderung verkümmert der Darm, der After schließt sich. In der Sargassosee laichen die Aale und sterben dann. Die durchsichtigen Larven (zunächst Weidenblattlarve (Leptocephalus), dann Glasaal genannt) schwimmen zu den Flussmündungen und weiter stromaufwärts.