Set of scaled elevation drawings of the Bull Trout viewed from the front and side

The Bull Trout (Salvelinus confluentus) are threatened species native to freshwater lakes, rivers, reservoirs, and oceans of Northwestern America. They belong to the family Salmonidae with migratory species being larger than sedentary species living in streams. They are highly identified by salmon-colored spots of yellow or orange on their backs and fins having white leading edges.

Bull Trout are highly sensitive to water temperature, salinity, and quality which are a threat to their existence. The fish can also interbreed with the brook trout in areas introduced. Females dig nests in the gravel during spawning. Bull Trout is highly popular as a cold-water game fish.

Bull Trout have a total length between 24”-34” (61-86 cm), body height of 5”-7” (12.7-17.8 cm), and an overall weight in the range of 3-9 lb (1.4-4 kg). The typical lifespan of the Bull Trout is 5-12 years.


*Under Development*

5”-7” | 12.7-17.8 cm
24”-34” | 61-86 cm
3-9 lb | 1.4-4 kg
Scientific Name:
Salvelinus confluentus
5-12 years


Drawings include:

Bull Trout side elevation, front

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Freshwater fish are fish that spend some or all of their live in water with a salinity level lower than .05%. Freshwater fish, due to the segmented nature of ponds, lakes, and rivers, are subject to speciation similar to species on islands.