Arizona's WildLife

"Where the Wild Things Roam"

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Rainbow Trout

Oncorhynchus mykiss

Look for rising fish in clear pools

The rainbow trout (Oncorhynchus mykiss) is a colorful freshwater fish widely stocked in Arizona’s streams, rivers, and lakes for recreational fishing. Recognizable by its vibrant pink lateral stripe, silvery sides, and dark spotting along the body, rainbow trout are adaptable predators that feed on insects, small crustaceans, and fish. They are highly sought after by anglers for their spirited fight and visual appeal, contributing significantly to Arizona’s sport fishing opportunities. In addition to their recreational importance, rainbow trout play an ecological role in controlling aquatic invertebrate populations and supporting predators such as birds and larger fish.

Fish

Identification & Behavior

Key Features: Pink stripe, spotted back, forked tail

Size: 10–18 in, up to 8 lbs

Behavior: Prefers oxygen-rich streams; often near riffles

Diet: Carnivore — insects, crustaceans, small fish

Activity Pattern: Diurnal

Habitat & Distribution

Stocked and naturalized statewide, primarily in northern rivers and streams such as the Little Colorado, Salt, and Verde River drainages. Present in Coconino and Kaibab National Forests.

Elevation Range: 5,500–9,000 ft

Seasonal Presence: Spring–Fall