7174

• UCREFRP Catalog Number: 7174
• Author: Miller, R. R.
• Title: Report on Fishes of the Colorado River Drainage between Lee's Ferry and Surprise Canyon, Arizona.
• USFW Year: 1975.
• USFW - Doc Type: Ann Arbor, MI.
• Copyright Material: NO

a
Fishes Collected on the Grand Canyon Survey, Lee's Ferry
to Diamond Creek, August, 1968
I. Native species
Cyprinidae, minnows '
' ~ Gila cypha Ml11er. Humpback chub; 6 taken from main river. '
Rhinichthys osculus (Girard). Speckled dace. Caamoon in
the manyatributariea (e.g., Bright Angel Creek, Shinumo
Creek, Tppeata Creek, Diamond Creek), rare in main river.
Catoatomidae, suckers
C°rost'omus lat'_ innia Baird and Girard. Fianneimouth sucker.
Common in main river.
Catostoa~us diacobolus Cope. Bluehead sucker. Cammon~ fflea
• of main river and in swift tributaries. ~
II. Introduced species
Salmonidae, trouts
Salmo airdneri Richardson. Rainbow trout. Common in Bright
Angel, Tc~eate, and Haveau creeks.
Cyprinidae, minnows
Cyprinus ca_ rpio Linnaeus. Carp. Common in main river.
Notrovis Iutrenais (Baird and Girard). Red ahiaer. Common
. ~ - in main river.
P_ imephales promelae Rafinesque. Fathead minnow. Abundant
in main river.
Hybrid: Notropia lutrensia x _Pimephales pr aaelas. One •
,juvenile from 5hinumo Creek; first record of this cross.
Ictaluridae, freshwater catfishes
Ictalurus punctatus (Rafinesque). Channel catfish. Abundant
is main river.
Ictalurue melas (Rafinesque). Black bullhead. One young
taken 64 miles below Lee's Ferry.
The introduced fishes outnumber the native ones, both in species and in.
numbers of individuals. Channel catfish are particularly abundant, as are