Perciformes - Perches
Siluriformes - Catfishes
Cypriniformes - Carps
Anabantiformes - Gouramies and snakeheads
Osteoglossiformes - Bony tongues
Anguilliformes - Eels and morays
Acanthuriformes - Surgeonfishes
Beloniformes - Needlefishes
Gobiiformes - Gobies
Synbranchiformes - Swamp eels
Myliobatiformes - Stingrays
The Nan River originates in the Luang Prabang Range, Nan Province. The provinces along the river after Nan Province are Uttaradit, Phitsanulok and Phichit.
The Yom River joins the Nan at Chum Saeng District, Nakhon Sawan Province.
When the Nan river joins together with the Ping River at Pak Nam Pho within the town Nakhon Sawan it becomes the Chao Phraya River.
The Nan river runs about 630 kilometres (390 mi) south.
