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- -t3- officially dropped from consideration in 19~fJ, Tn 191, the American ~i~~heries Society (AFS) Bonnc:vi lle Ch~~pter p;:titioned USFY~S 12egion 6 to reconsider the -list~.ng. That same year, USi n~95 Region 2 decided not to pursue listing, k~~.at instead initiate a propagation and 1~-year reintroduction and monitoring program in the lower basin. Razorbar,:k suckei_: waa designated a candidate species for federal endangered listing status in December 19II2 (fed. Regist: 7[25]), largely a result of the 1981 AFS petition, and remains as such. Because there apparently i.s no documentation of razorback sucker recruitment in tt~ie upper basin,-the Colorado River Fishes Recovery Team COIlt]_IlUea to support its previous recoYn~.endati.on that the species be listed as threatened, at least i_n the upper basin (St. A.mant, CDFG, pers. cornnlun. ). Arizona Razorback s~ar_}~,.er has bevyn extirpated in Arizona from the Salt, Verde, and Gila givers and their tributaries. Remnant poLul.ations remain in lakes triohave, ~ea~d and Powell along the main5tr_eanl Colorado Riv%r, and a few i.ndivi.duals have been collected from floJirtc~ reaches in the past, few years. Prior to 1981, littl_~; progrf~s:=~ w7~~:} r~:ai?~' k~~r thc~ ~1C;:~D irI recov~lring tYiit~ species. In 1374, a p 1~-~n was develo,~'~d tc~ i_nit.iate a U «z7 ~ tar{JOCIStOCk rei n~~rodu~~tiol. pro~~~ra~~~,. (i9i.n~~.,l...u and I~ok~~.ticYi 1974) . WGL'C? t1(:'.l'=A ~~nCt ~~,iL3~1,.~T4~~~ ~~: t~Icn i~S~'Z`i~i vd].11.0';h~ BC~~$cYl t4r±t,lfan~l k' ]_5h a~i(:('hEe1':2~ ~r~:i''1'~) b'1C?Vd iiC}c~Ver ~.~,"~:'i4 t~~Ic'..'i`l ~) "~~C~E'ny ~Yl'i~ t~dl~l.'C)_Orli~l _~`:, ., ..,. t' ~ .~.. ,. 7 ~.~i :'.tj ,i~:,,•i'i.. 1. ~..-:i n.~~~_E fi, Y. . ~~ Ltt ~~'5 ~:. ~a ~~~' ~.V ~~1, l_~fti V'~ - ~.L`<~ ~G~7. fJr~~: ~. `"f``.l.l~~~_.F ~..K~`, th'J "'~'z,Cl~,t t)CII,G:f:Li}?~ ~s.^~) ~ ~?';~ ~d~7 P"1v~, -L 1,1 .. t; i ~a. Lr G3 C'~ .