---
title: "Westslope Cutthroat Trout"
description: "Oncorhynchus lewisi — Fische. The cutthroat trout (Oncorhynchus clarkii clade) is a clade of four fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America."
canonical: https://animalchecklist.com/de/animal/westslope-cutthroat-trout
last_updated: 2026-09-20
---

# Westslope Cutthroat Trout

> Oncorhynchus lewisi — Fische. The cutthroat trout (Oncorhynchus clarkii clade) is a clade of four fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America.

- Scientific name: *Oncorhynchus lewisi*
- Category: `fish` (Fische)
- Habitats: `freshwater` (See & Fluss), `mountains` (Gebirge)
- iNaturalist observations: 1684
- iNaturalist taxon: [1316403](https://www.inaturalist.org/taxa/1316403)

## Names

- en: Westslope Cutthroat Trout
- fr: Truite fardée versant de l'ouest

## Countries with the most observations

US (927), CA (493)

## Summary

The cutthroat trout (Oncorhynchus clarkii clade) is a clade of four fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America. These four species are the Coastal (O. clarkii), Westslope (O. lewisi), Lahontan (O. henshawi), and the Rocky Mountain (O. virginalis). As a member of the genus Oncorhynchus, it is in the Pacific trout group, which includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among anglers who enjoy fly fishing. The common name "cutthroat" refers to the distinctive red coloration…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Cutthroat_trout

## Photo

![Westslope Cutthroat Trout](https://animalchecklist.com/img/animals/westslope-cutthroat-trout/medium.jpg)

Photo: Sue Elwell · CC0 · inaturalist — https://www.inaturalist.org/observations/184944491

## Machine access

`GET https://animalchecklist.com/api/v1/animals/westslope-cutthroat-trout?lang=de` — see [openapi.json](https://animalchecklist.com/openapi.json).