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<br /> <br />:i- <br /> <br />, <br />.,..:' .... <br />.:.""'- <br /> <br />.... .- <br /> <br />'. <br /> <br />.....:: -~, <br />.~~~~ <br />'~.,/p <br />- ,6 .' ~"" <br />I.' '-", <br /> <br />, <br /> <br />< <br /> <br />. .-. .~.. <br />....'}. <br /> <br />Figure 67, BonytaillCh8ralito eJeganli. 52 cm In fOlal length. lrom Lake Mohave, <br />Arlzona.Nevada, This IS consIdered by many workers fO be the most endangered <br />lreshwalef fish In western North Amenca An allempl IS underway 10 move aU <br />indivIduals encountered 10 nature Into captivity 10 serve as a broodslock lor future <br />reintrOductions <br /> <br />been [hllu~hc [0 he JJ.lrtcJ co curbul~m llJblt;lI~, <br />slmi!J.r to those Inhabll[e,j by humpback chubs. It <br />~t"cm~ more !Jkely. h,)wt"H"r. tb.lt [ht'lr r.oJ~' sh;Jrt' <br />makes cht'm m(l~[ ;It hllllle In re:l.ltivd~' SWift but <br />laminar IInw, .IS IS s[lll tound o\'t'r smooth ~alld <br />hlltwms In the Culm .ldn River ..:h.mnd. t\ Ie.... J.dlllt~ <br />examlnt"J f(lr IOt)d h,lbltS b;JJ e,Hen .1 11Igh <br />perct:ntage of [errt'~tnAI In\Trtt'Dr;ltt's. Jnftlng Inst'u~ <br />that Iud be,'n blown h~. wllld or utht:rwlse f.lllen InW <br />the rJ\'er. O(currenc(" of .Idult aquatic Insects III <br />swmachs Jlstl Imp!Jes ft"edlng ;H or neJr the WJttr <br />surrat!' The only reproJlltfl\,{' actIVIties rt"(ord,,,d fllr <br />btlnyt,lll He of J~c:rq.:a[Jons of Jdults m'er f:r.I\'dly <br />"reds" in artlficial lmp(lundmencs. h.lbltars J.nd <br />.lctJ\'jties ot' youn,i.: He unknown In nature: Tht" <br />lar~est recll"~ed bon~.tad was ;Ibour 65 cm In Ir:n.<-":th <br />Two other r.pl.'Cles of the lllJ.lllStream ColoLldtl <br />Rn.er .Htaln rel.Hi\"dy larf:t' SIzeS. FLmnclmnutb <br />suckers (;Ill f:ro\\ to nearl~. J mt'ct"t In Icn,cth Jnd <br />rounJuil (hub to mnre chan .Hl cm: buth art. <br />JlscUSSt'd el~t'whert". The next two srcCles are <br />relati\'ely small. \'\'ound/lll lFlg. ISs) r.lrdy ex(t't"d 10 <br />em lon~, and Jesef[ purtlsh rardy cxceed ..0 mm. <br />e\.en JS an txrremel~' LLr~e aJult The !lrst thrr-e of <br />the~e were r Ht" 10 t'.Hly lolleUlOll5- (rom the hmn <br />Color,Hj() Rlvt"r r.J)Jn. .lOJ tht" l.bt .....15- ,limosc <br />(l"ftainl~. common In more cpht'merallur.Hac tll() <br />se"ere for ocher ~pr-Clr-S. ~uch .IS on tht' ddu Itsdf <br />Dt'serr rurlish rt"r~l~t on the dt'!t.t .It prnenc. <br />typically In hl~hly ~Jhll(' pools ;tSSlllla[r-d wlth <br />lntlmnng srtlnp ,lIld seers, <br /> <br />The wpundfin was !lIt. llnly sm;dl. shorr.lIved <br />spelles kn.)wn (rllm the dunnd of tht" lower <br />Color,lJll River ThiS speCles IS ont l)f J. UlllljUt" <br />f:rour 01 ~'(lnh ,'\mert(.1Il mlOnows III tuving the <br />It'aJmf: rays (If ItS dorsJl Iln mlldifieJ inw J stout <br />spine. OdH'r membt"rs of thiS mlnnllW ,L.:toUp also <br />h,tH such ra~'s. but not so speuJ.cubrly Je\'t'lope:d. <br />The specIes I~ ,IJ..ptt"d I~lt iLle In hlghly turbid water <br />.wcr shLli:lOg sand hllITOmS, Irs Ilns art lar,l.!e Jnd <br />~ilklt'-sh.lpt"J. .tnJ dorsal stre,lmllnlng is extremt" <br />whik the lowr-r b(ldy is Ihttent'd to tlt c1oscl~. to the <br /> <br /> <br />Figure 68 Woundfln, ca 90 mm 10 total length. from Ihe <br />Virgin River, Aflzona ThIS endangered speCies. once known <br />from bolh the lower Colorado and Gila nvers. IS now <br />completely restricted 10 the Virgin River malnSlream. <br />Nevada-Arlzona.Utah. <br /> <br />34 <br />