The Columbia River redband trout,[1] the inland redband trout[2] or the interior redband trout[1] (Oncorhynchus mykiss gairdneri) is one of three redband trout subspecies of the rainbow trout in the family Salmonidae.[3] It is native in the Columbia River and its tributaries in Idaho, Oregon, Washington and Montana. It includes sea-run anadromous forms, which are known as redband steelhead. Also the large Kamloops rainbow trout is included.[2]
| Columbia River redband trout | |
|---|---|
 | |
| Redband trout in the Boise National Forest, Idaho | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Salmonidae |
| Genus: | Oncorhynchus |
| Species: | |
| Subspecies: | O. m. gairdneri |
| Trinomial name | |
| Oncorhynchus mykiss gairdneri (Richardson, 1836) | |