7327

• UCREFRP Catalog Number: 7327
• Author: Johnson, J. E.
• Title: Status of Endangered and Threatened Fish Species in Colorado.
• USFW Year: 1976.
• USFW - Doc Type: T/N 280,
• Copyright Material: NO

2. General Description - The spotting pattern is similar
to S. c. pleuriticus and S. c. stomias, being most numerous,
pronounced and largest on the caudal peduncle area but the
spots are generally smaller in S. c. virginalis. The color-
ation of virginalis is not as intense as in pleuriticus and
stomias. The colors are more pastel-like hues, light rose
to red-orange on the sides to pink or yellowish-orange ven-
trally. The colors are most pronounced on sexually mature
fish, particularly males during breeding. The color intensity
is also influenced by environmental factors such as diet.
The lower fins are usually tinted with red or orange, and a
prominent red or sometimes orange cutthroat mark is present
(Behnke 1973 b). Also see Table 1.
3. Present Distribution (Fig. II) - Upper Trinchera Creek,
Indian Creek, Rito Seco, all headwater streams of Trinchera
and Culebra Creeks, Forbes Trinchera Ranch, Costilla Co.,
Colorado. Also streams in Carlson and Santa Fe National
Forests, New Mexico.
4. Existing Management Plans
a) Colorado - Trinchera Ranch is currently being subdivided
for land sales by the Forbes Corporation. Mr. Errol
Ryland, Wildlife Manager for the corporation, has been
informed of the significance of S. c. virginalis and
expressed some interest in protecting it (Behnke 1973 b).
b) New Mexico - Management Plans have been written for the
Rio Grande cutthroat trout by the U. S. Forest Service
(Donald Duff, now BIM, Utah S.O.) and New Mexico Fish &
s
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