Koros

Water type: River
Basin: Tisza -> Danube -> Black sea
Continent: Europe
Climate: Continental
Country: Hungary

Perciformes - Perches

Esociformes - Pikes

Siluriformes - Catfishes

Centrarchiformes - Basses and sunfishes

Cypriniformes - Carps

Acipenseriformes - Sturgeons and Paddlefish

Gadiformes - Cods

Gobiiformes - Gobies

Petromyzontiformes - Lampreys

The Körös or Criș is a river in eastern Hungary and western Romania. Its length is 128.6 km (79.9 mi) from the confluence of its two source rivers Fehér-Körös (Crișul Alb) and Fekete-Körös (Crișul Negru) to its outflow into the Tisza.

Actually, it has three source rivers, all of which have their origin in the Apuseni Mountains in Transylvania, Romania: Crișul Alb (Fehér-Körös), Crișul Negru (Fekete-Körös) and Crișul Repede (Sebes-Körös).

The confluence of the rivers Fehér-Körös (Crișul Alb) and Fekete-Körös (Crișul Negru) is near the town Gyula. The Körös downstream from Gyula is also called the Kettős-Körös (Hungarian for double Körös). 37.3 km further downstream, near Gyomaendrőd, the Sebes-Körös (Crișul Repede) joins the Criș/Körös. The section downstream from Gyomaendrőd is also called the Hármas-Körös (Hungarian for triple Körös). The Körös flows into the Tisza River near Csongrád.

It was known in antiquity as the Chrysus, Crisus, Crisia, Grisia, or Gerasus.