7724

• UCREFRP Catalog Number: 7724
• Author: Snyder, D. E.
• Title: Contributions to a Guide to the Cypriniform Fish Larvae of the Upper Colorado River System in Colorado.
• USFW Year: 1981.
• USFW - Doc Type: \
• Copyright Material: NO

RIVER SYSTEM AND ITS FISHES 5

Table 1. Status and recent distribution of fishes within 12 subregions of the Colorado River System in Colorado (Fig, 2),
Relative abundance refers to abundance within at least one principal habitat zone within the subregion of
concern and is designated on the basis of available reports and cOnlnunications* as: C - generally COlllnon (>1%
of all fish collected), 0 - only occasionally COnlnon or generally less C01TJT1On (<1% of all fish but regularly
collected), and R - rare (rarely or infrequently collected).**

Sys tem Subbas i ns:
Drainage Systems:
Subregi ons:
Habita t Zones I:
Species Status2:

Salmonidae
Oncorhynchus nerka
Prosopium williamsoni
Sa lrno aquabonita
Salrno elarki
Sa lrno gairdneri
Salmo t1'Utta
Salvelinus fontinalis
Salvelinus ncunaycush
Esoci dae
Esox Zucius
Cypri ni dae
Cyprinus carpio
GiZa atl"apia
Gila cypha
Gila e Zegans
Gi Za robus ta
Hybognathus hankinsoni
Not:ropis lutrensis
Notropis stramincus
Pimepha lea p:romelas
Ptychocheilus Lucius
Rhinichthys cataractae
Rhinichth~s osculus
Richardso~ius balteatus
SemotiZus atromaculatus
Ca tos tomi dae
Catostomus catostomus
Catostomus commersoni
Catostomus discoboZus
Catos tomus latipinnis
Catostomus platyrhynchus
Xyrauahen texanus
Ictaluridae
Ictalurus melas
IctaluruB punctatus
Cypri nodont i dae
Fw'di.1/.-.us Zf'br'im4,<;6
PunduZus sC'1:adicus
Poeci 1 i i dae
Gamf!l.~si.a a./f1:nis
Centrarch i dae
Lepomis cyane llus
Lepomis macrochirus
Micl'optel"'Us do lomieui
Mic1"opteroM..<:;' salmoides
Pomoxis annu Za:ris
Pomoxis nigr'omaculatus
Perci dae
Etheos toma e:ci le
Etheostoma nigrwn
Perea f~avescens
Stizostedion vitreum
Cottidae
Cottus bairdi
Cottus be ldingi

!i I I

x - -

X3 X3

x X X
X X X
X X -

X X
X -

X -
X X -
X -
X

X -
X _ .8

Yamoa
1 2
HI HI

o

o
R
C
R
D

Green
Yllin Jtihill.
3 4 5
LI HI HI

R

R
o
R

R

o
C
R

Upper Mainstem Colorado San
CDlorado Gunnlson .QQJ$gs. J.wl1l
6 7 8 9 10 11 12
HIR HIR LI HIR HI HI HIR

C

C4
C
o
C

R
o

C

C

C
R

_5
C
C
o

R
o

o

R

C
C

C

R

C

o

a.
o
o
C

C

o

R

C
R
R
R
C

C
C
C
o

C
R
R

o

C
R
C
R

C
C
R

04
o
o
C
o

a.
o
o
C

R
R

R
o
C
o
C
R

R

o
o
C

o
o
o
C

o
o
o
C

C

C

C
C
R

o
C
C
R
R

o
C
C
o
R
R
o

R

R

R

C

o

C
R
C
C
C
o

R
C

o

C
C
R

C
R

o
C
o

o
R

o
R

c

C
R

C

c

C
R

o

C

C
C
C
C
R

o
C
C
R
C

c
C
o

C
C
R

R

R

C

o
o
C
C

o
C
C
o
o
C

C
C
C
R

C
o
C

C

C

C
C
C
o

o
C
C
R

R

R

R

o

o

o
R
R
o

R

07
07

C
R

C
R

R

C
C
C
C

o
o
C
C

o
C
C

C
C
C
R

o
o
o

R

o

R

o
o
o

R
C

C

C

o

R

o

o
o
o
o
o
o
o

o

R
R

R

R

o
o
C

o
R

R

o

IH _ headwater streams and lakes, cDld and clear; I - intermediate rivers and streams, cDol to tepid and Dccasionally
turbid; L. large rivers, warm and usually turbid; and R - major reservoirs.
2N _ native, natural inhabitant of the system; E - endemic, native species fDund only in the CDlorado River System;
T - threatened or in danger of extinction (endangered) as per Deacon et aI, (1979) or the federal or Colorado lists,
3Subspecies s. Q, plew-iticus only.
"Includes relatively pure populatiDns of the endemic subspecies which are CDmmon Dnly in Trappers Lake (subregion 5)
and mountain lakes in other subregions stocked with Trappers Lake fish.
SReported only in Piceance Creek by Pettus (1974); probably C, latipinnis misidentified as c, commersoni,
6Many of these specimens were previously identified as Fundulus kansae. The tvlD presumed forms are nDW recDgnized
as being cDnspecific and are listed by Robbins et al. (1980) as Fundulus zebrinus, the senior synonym. .
7Reproducing populations in Shadow Mountain Reservoir,
8Assuming the few specimens repDrted in Colorado were indeed Cot,tus beldingl and not variants of C. bai'f'di, this assumed
native species should be placed Dn the state list Df endangered species.

*Literilry Sources: 8axter and Sili10n (1970); 8ehnke and 8enSDn (1980); Carlson et al. (1979); ColDrado River Fishery
RecDvery Team (1978 and 1979); Eiserman (1958); Goettl and Edde (1978); Holden and Crist (1979 and 1980); HDlden
and Stalnaker (1975a and b); Joseph (1978); Joseph et al. (1977); KDster (1957); Lanigan and Berry (1979); McAda
(1977); McAda and WydDski (1980); OlsDn and McNall (1965); Prewitt et al. (1978); Seethaler (197[); Seethaler et al.
(1979); Sublette (1976); Vanicek et al. (1970); Wiltzius (1978) and Wick et al. (1979 and 1981), PersDnal CDmmuni-
catiDns: RDbert J. 8ehnke, Paul B. HDlden, JDhn P. Hubbard, David Langlois, Steven H. Lanigan, David L. Propst,
Richard Valdez, William C. Weiler, Edmund J. Wick, and William J. Wiltzius.

**lnfDrmatiDn for certain fishes in many areas was limited and errDrs Dr misjudgments are possible, Please send any
correct i Dns or sugges ted changes to the authDr.