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<br />Nonnative fish threaten survival of endangered fishes
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<br />"dc'h>tLlIg" th..m (f{'mov,
<br />mg Ihem from pro-
<br />t,,~ll0l\ Illldt'r tb.. kder.ll
<br />Enrl.1ngtr..d Sp"Cit'~Acl).
<br />From Idte April
<br />Ihw\l)(h ()(:lOtx'r thl~ ~'t'.1r.
<br />RL'ulvery I'fllgrdffi tlin!o-
<br />gl~t\ worl.:td 1Il...'t:'1II111~ of
<br />-+38 IllI],'\ of OWl' In
<br />C(lloudn .llld Vah 10
<br />n'll\(lVf' Ihft'" ~pt'(;il'~ of
<br />n"mulivl' fhhl'j;: dUlllll'1
<br />1:.111hh. nllrdll'rn pih" dud
<br />Ih b.l.~.. Till')'
<br />Ihl'sl'
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<br />(OllWlAOO"'....UllfI
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<br />M,J~thdIl40110nll.lli'.t.rr~h
<br />..J'lt'l:iL~ can Or fuund in
<br />Ihl' Upp..rCOhlTdrlo RIH'r
<br />Boi..m, ((,mpnl'd with H natiw fhh
<br />\P"Ul'!\, Nl'~.lIl\'I:' lllleTdl'lltll\\ wult
<br />ll'rl.in WdrmW.llt'r nOnn.lll'" Ihh
<br />S{'fill'" h.l'c Wl1\ribU1ffl 10 rltocllllc....
<br />in t'nddngl'rt'd .Ind olb,'r ndll\T fi~h
<br />f'Opul.lion.. MIllie nonn.lli\'t' fish
<br />pT"Y upon f'llddngt.r.-d dnd oll1.'r
<br />lI.l11vellsh<'$-edlingth.-ir.-ggl.lnd
<br />din\olllt'(.1'o('S,\.l.rgl'tlhh
<br />Ihh iJo,o u>mpctc wllh
<br />,r food.llld \p.t.lt',
<br />, U pl'r Color
<br />RI\~r Enrl.llljj!('rt.d Pt~ "<'<I""r)
<br />ProgT.lml'Jlp.lnd.oddTnrISlnldl'nllf)'
<br />mdll.lg.-m,'m aq~~~inimi/l'
<br />fl'lll'l'ftthl'lhrt''l...ofno dUVl' r"h~
<br />to ~N.(J of Ihe ,'n g{'r1.d fhh,"",
<br />Rf1.,'ntly compl"llod ll.'lcwct)' go,lI\
<br />rt'<:jlll~lh.llthISouurbrf"relht'US.
<br />fr..h.lndWildhfe$l-rvlu:l'.l.llcon..id.
<br />I'r l:h.IIKlllK thC' ..t~IUS of th....C'
<br />"Jll'dts from "ellddIlKC'r..dR 10
<br />"thrC'.lI"lIl'd" dlld C'H'ntll.lll)' to
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<br />Ihl'}' po!.!' .l ~lg'
<br />Ihr"dl to tht'
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<br />\\fhnt dppropridlC'
<br />.lId prdl'liuL blnl<)gl\l~
<br />rl'hM:.1ted fl..h relllo\,t'd
<br />from the' nVt.r tn 100(.11
<br />Ixmd\ .llld r.-wrV\'IN Ihdl
<br />dft' puhhd)' dn:,'~!iihl.. II> "'t""".._......._.'1~IlI('-I\oo.""hl{.......11AIKd1lO_....M.".....((In..IMo:11.{.._""Ou..,1t
<br />,1IIgl.,l'!;.
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<br />Targeted Nonnative Fish Species
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<br />Northern Pike (Esox /ucius)
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<br />Northerll pike are common locally in reaches of the Yampa and Middle Greell rivers.
<br />The 1I0rtherll pIke is a 10llg.bodied fish with a duckbill SlIout alld mouth filled Wilh
<br />shafpteeth.Thisspt'dE'sisallaggresslvepredatorsubsistillgprimari1y on flsh. larger
<br />northern pikE' are kllownto include wall'ffowl in theirdlE'1. IlIdlvldu alsgE'nl'rallyrE'ach
<br />2B inchl's in length andcan liveoupt024Yl'afS. Rl'sE'archl'rshavE'Cil pltlr('(\northern
<br />pikE' upt044 inches long in !hE'Yampil Riveor. Northern plkt' spawn as soon as icE'
<br />breaks up in the spring.
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<br />Channel Catfish (lcta/urus punctatus)
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<br />ThE' channel cillfish IS the s!'cond largest membl'f of thE' catfish family III North America.
<br />They are common to abundanl throughout much of the Upper Colorado Riveor Baslll
<br />wht'retheyalE'knowntoliveuptonyeilrs. Thisspt'cies Is easily idenllfiable by its
<br />bMbt'ls (whiskNS), deeply fO(kl'd tail arid spoladic black spotlirlg.lls sizeable body is
<br />sleek. alld a broad.f1at head dwarfs its lower jaw. IrI the upper basin ,dlarlnelcatfish
<br />art' generally 20 IlIcht'sor less ill length; howeveol. rest'archers h avecaplurl'dindividu.
<br />alsuplOJsinchesllllheYampa River. Chilrlllt'lcatfish spawlI belwl'en early sprillg and
<br />summel. Tht'y use taste buds ill their st'nsilive barbt'ls to locate prey. Maj or foods are
<br />aquaticinsecls,crayfrsh,a!g<'H,'alldf1sh.
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<br />Smallmouth Bass (Micropterus d%mieui)
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<br />Smallmoulh bass belorlg 10 the sunfish family. Tht'y are common locally ill reaches of
<br />the Yampa and Middle Green rivels. Smallmouth bass are dislinguisht'd by Ihrl'e 01 four
<br />d",k ~tjt:.., sllipt's.'hal f'~lf'nd foomthl' eyt' loward lht' lai!. The eye is Iypl(dllyrt'd O(
<br />orallgt'. Ulln~e ifs cousln,fhl' I,lfgemoulh belss, its UppN ;awbolle dol'S I\ot e~tend
<br />bt'vond the l'Yl'. Smallmoulh bass may rl',)ch n inchl'S inlenglh alld live 10 Yl'ars" Thl'Y
<br />spawrlillthl'spring.Sm.lllmouthbdsse.Jtavaril'tyofaqualicinst'ClS. crayfish and fish.
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<br />p.igcl
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<br />1I.1'10\'l'r)' progr.m
<br />rl'''''.ll'dll'r\ will 111.'\:1 III
<br />[)eu.-mht'r 10 C\'~llldIC thl~
<br />).t'dTS ddlJ dnd d<'!,'rmine
<br />flllure nonn.1ti\'l' fish
<br />lll.lndgl'lIl"lll dforts
<br />A\ dl()r\s prnc,.ffi IQ
<br />Itknul)' dnd n-dUl:1' tlw
<br />Ihrt'.lt "fnOnnJll\'l' ll..ht'\.
<br />tl\l" lI.rt:oW'f)' Prololr~m I'
<br />worlting....1ththl'SldlOO(
<br />Culoudo .1n<i Ul.h to
<br />ddhl'rt' to ~Idl" uws .lud
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<br />rt'guldllnn,
<br />"Il i\nnl our illlelll to
<br />dlll\lIl~I.. <:Vl'ry Iltlllll.lll\'1'
<br />lhh in tht' ('ol"udo Min'r
<br />"y"lem:' wid Rt'lm'l'r)'
<br />Progrdm NOnn.lIl\'" Fish
<br />Courdindtuf P.l N..hOlI,
<br />"Rdtber, our 1ol0dl l~
<br />to dtt.llll dnd l!l,UnlJln
<br />lhh lIl1TllIllllllll.... wh..-....
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<br />JlllPubtiom.
<br />..Iltbngl.....a
<br />ll.l.til'l' fi,h
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<br />uf
<br />dllll
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<br />spellt's lJlI
<br />pt'f'>i\l dnJ thrive .lnd the
<br />rt'co\'t'r)' gOdls for Ihl'
<br />I'nd.lllgt'rt'd r"h.'~ Ull ht'
<br />ddlll'Ved~
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<br />Olhl'rMdn.1gl'lIlt'nl
<br />Auion.\
<br />Olh..1' nOlllldll\'l' rl\h
<br />mdll.lg"lTll'nt l'(forts (On.
<br />dUllrd or supporl..-d hy
<br />Ihe 1I.1'(o\'t'ry Progr.lm
<br />indllde \.t:r'"1'ning r..~t'r.
<br />voir OUlll'IS. bl'rming
<br />pnnds tn prC\'''-nl nOlllu-
<br />Ihl! fish~ lmm l"Sl.dplll~
<br />IIlln Ih.. tl'l'l'!;. (kn.loplllg
<br />.lgrl'{'m..nt~ t,) regu1.llt'
<br />,1O(klng uf lI"mUll~ lhh-
<br />t">..lndl'h.luging ,UII' baK
<br />.lndllt)<;~siol\linllls.
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<br />IOOlO&/Sn (_""0 ~ _"(I""'" I. '''I .~"N OM. ,,,.. """ '1lI ..... 00 A ......IIoUH~Tl. (IJllll.-llltl
<br />...IOO"__DollG '_,nMaU'" _,..... ..., ~o.oOf"" _...,.., "'" ,,"0" "A"""''''b ""
<br />(OUlI....,..<l........."'....._I'$.......'DAlOlI
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<br />III 1999, lilt' RN:.,,'~r)' PWgt.llll
<br />mSldl1N1 d fish '>I:f't,,'1I .It Highlinl'
<br />uk" III WI'~I...rn Clllor.ldo 10 pn""..m
<br />n"nn~ti\'t, fi~h.~ "I,><h'd mIl", 14kl'
<br />from ......driIlK mIll tht riVl'r whl"t,.
<br />thf'}' Illlgbl mll'r.lU wilh t'lldJng.'fl:'d
<br />fish...s, This ~lt...t'n h.1~ .ll1nwNl
<br />ColorJao 10 \llld th., IJkt' with ~P""
<br />n~h kUll'>t' il "rt'H'Ill' lll"gdUI.'l'
<br />int..r~.liol\wllhth....lld.1ngl'T1-d thh.
<br />C'1o.Sinllldrly..l.S<rt'o:npl.1lt'dl.'I)'''-.lr
<br />.II Iht. Utl'Tnhr'~ n",,1)- l:Olhlflllled
<br />Elons Pond in Ilmlht'dsl Uldh
<br />t'luhlrd lhl'Trihr 10 \lod: Ih.. pnud
<br />Wllh sporlflsh
<br />The 1I.,'o::o\"-"ry Progum dl\.O hn
<br />worked wuh lhl' \1.11.... of Colurdd"
<br />.Iud Ul.lh to r.~l\l' I\unn~ll\'l'
<br />fl\h 'In(king pld.m III ~lOp Ihl'
<br />1IlIrudll,'!lOn uf prohlellldtil'
<br />1lOlllldliv.. nth,'J> inlo h.bl14h
<br />Olcupkd h)' ill<' "ll<ldll n'd n~h..s
<br />111 dddillllll. I' Co]or.ldn
<br />hd.. I't'fIln\'f'd
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<br />Hl'lpllli Ofhl'r Ndtivl" filh Sprdl'\
<br />Biologi"ls bt-h,....e thdl nOlllldll\'1'
<br />fhh nundR,'lIlt'n1 .ldlOll," I.l.lr.t'n to
<br />b,'IWtit II... I'lldJ1\Iol,'n-d h~ht"< .ll"':l
<br />WIll Ocll.-fU fJtlwr IWlV,' h..h ~p..d...s
<br />SIKh .lllh., rnuuoI.lrl.hub, hlllt.heJd
<br />.llld ll.lllm.lmolllh ~Illk"r. .lnd
<br />\p,'dl..dd.llt'
<br />"Our ddl.l "uRgt"<1 Ih.. .lhllnd.lnt
<br />gJml'll..h lilt' nortlwrn Pllt'. ..1Il.111
<br />mouth hdS' .Iud .h.llllWll.llfhh .lrt'
<br />l.dllllgllJ'''loftlu.).oungft..hp.....
<br />duCt"d t'uh )'''.lI','' \.lld Colourlo
<br />Di\'jsiUIl o( \\fildlif..- NJliH:' Fi~h
<br />(ol1'it'rV.ltlon Prt'llr.llll M.lll.lgt'f Torn
<br />Nl'\ll't "This WIll fl'~llh 1Il Jl....hlllllg
<br />ddult popUbUnll\ of IIdll...' ft~h
<br />\1)(,,(1"S O\'l:'ttllllt', Nonlwrn plk,'h.l\'t'
<br />hI..gun III prl'Y upon Cnl"r.loo
<br />pilr.C'rlllnnow 11\ lhl' Ydmp..! RlVl'r dll<'
<br />II' th.' !ot.1rcil)' 01 Hsh prt')'- H)' "'~)rl,
<br />inlol prn.l.1ivd)'IIlIll.llllldlfl b.ll.l.1lll' III
<br />Ihl' nvl'l' 5)'\11'111. U 1\ h<lJll'lllh.l1 ~1I
<br />1I.l1i\'t' Sp'....l.... will Cl>lllilllu~ 10 Ihll\'!'
<br />.lIdlll...."rn"llllr..tU .llptl,
<br />It'lllon d..thr. .Illg"n'lt.~
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<br />('lIllrr Y.lfllp.i Riwr ltllll.ll
<br />h<lhu~t in lht rolora.!n, .1
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