Cutthroat Trout Physical Description

AbstractIndividual spawning populations of Yellowstonc cutthroat trout Omorhynchus clarki houvieri differ in life history characteristics associated wi th broad spatial and temporal environ mental patterns but relationships between specific life history characteristics of Yellowstone cut throat trout and physical aspects of the environment are poorly understood.

Cutthroat trout physical description. There is evidence that the heavy trout harvest in the northern part of the lake allowed Gammarus lacustris an important food to become locally abundant. Have teeth under tongue on roof of mouth and in front of mouth. States their original range was upstream of Shoshone Falls on the Snake River and tributaries in Wyoming also across the Continental Divide in Yellowstone Lake and in the.

Westslope Cutthroat Trout is a trout with small non-rounded spots with few spots on the anterior body below the lateral line. Range and Species History The Colorado River cutthroat is considered by most experts to have evolved from the Yellowstone cutthroat based on geographical isolation. The Greenback Cutthroat Trouts maximum size is 18 inches and it has the largest spots of all cutthroats.

Resident coastal cutthroat trout are one of three subspecies of cutthroat trout that occur in Washington and one of the two that are native. Given that additional lineages of our native cutthroat trout were identified with the DNA testing above we wanted to determine if these lineages displaye d different physical characteristics as well. 05032018 Therefore the real distinguishing difference between a Cutthroat Trout and a Rainbow Trout is that Cutthroat Trout have a set of basibranchial teeth at the base of their tongue and a maxillary that extends beyond the posterior edge of the eye.

The original range of the CRCT was an inverted U shape. There is also an anadromous or sea-run coastal cutthroat. 02072020 Cutthroats get their name by the distinctive reddish orange marking underneath their lower jaw.

As with all cutthroat trout they have the distinctive red slash mark on each side of their lower jaw and teeth on the back of their tongue. Depending on the subspecies they will have some distinct physical characteristics but will mainly exhibit a goldengreen back with golden to pale sides. This is particularly important since it has been argued that genetics should not be the sole factor in determining taxonomic distinctions and that morphological traits visual characteristics.

Despite its name the Greenback Cutthroats back is not particularly green. 16122019 The CRCT is also one of the subspecies of cutthroats that make up the Wyoming Cutt-Slam the Utah Cutthroat Slam and the Western Native Trout Challenge. Coleman and Fausch in press a.