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-22- THE 6.t- 8 INCH GROUP CONSTITUTED OVER 55 PER CENT OF THE SAMPLE OF GILA ROBS UST A TAKENS WHILE THE 0 - 4 INCH GROUP MADE UP ONLY 11 PER CENT CF THE SAMPLE. THIS SPECIES RANGED IN SIZE FROM THE 0 - 4 INCH TO THE 12.1 - 14 I-NcH GIoup. So (FIG. 12 9. ROUGH FISH SH (M I MBRES RIVER) THE SIZE RANGE OF BOTH CATOSTOMUS SPo AND PANTOSTEUS SPa WAS FROM THE 0 - 4 INCH TO THE 6.1.- S INCH GROUP, WITH THE 0 - 4 INCH GROUP CONSTITUTING THE GREATEST PER- CENTAGE OF THE SAMPLE TAKENo THE Gal ® S INCH GROUP CONSTITUTED ONLY 4 PER CENT OF THE SAMPLE. (FIG.a0) DISTRIBUTION OF FISH: THE GREATEST VARIETY OF SPECIES AND LARGEST NUMBERS OF FISH WERE FOUND IN STREAMS OF COMPARATIVE HIGH TEMPERATURES AND LOW ELEVATIONS. FEU FISH9 OTHER THAN TROUT AND DACE9 WERE FOUND ABOVE- 7,000 FEET. AT 59000 FEETr SUCKERS, CHUBS, DACES BASS9 CAT-- F1SH9- AND OTHERS WERE FOUND. ` SEVERAL STREAMS WERE SURVEYED WHERE ONLY TROUT EXISTED; OTHERS THERE 3UCKER& PREDOW NATEDo THE-FIGURES 13 TO 22 SHOW THE DISTRIBUTION OF EACH IMPORTAN- SPECIES AS LOCATED DURING THE' STUDY OF THE TWO DRAINAGES. PICTURES OF SOME OF THE SPECIES TAKEN ARE SHOWN IN FIGURES 27 To 38. 1. S&MO GA II.V1 THIS SPECIES WAS FOUND 1N 30.OF THE STREAMS SURVEYED ANDS IN 30ME CASES9 MADE UP NEARLY 100 PER CENT OF THE FISH POPULATION. (FIGURE•13) IT IS APPARANT THAN SALMO GA1ER-I AND SALMO, GPI L?AE HAVE HYBRIDIZED EXTENSIVELY IN MANY OF THE TROUT STREAMS. THERE ALSO APPEARS TO BE A SALMO CL? ARKI INFLUENCE IN SOME STREAMS. ,I&MG GA INNER I PROBABLIE • Ii URN i SH MORE FISHING THAN ANY OTHER SINGLE SPECIES OF GAME FISH IN THE GILA-AND MIMMES DRAINAGES, AS THEIR HABITAT LIES IN MORE ACCESSIBLE AREAS THAN MOST OTHER SPECIES. ALSO, THIS SPECIES 1S PLANTED EXTENSIVELY IN ACCESS, SIBLE WATERS OF THE AREAo 2. SAi Get: - TNI& SPECIES WAS FOUND IN 16 STREAMS OF THE GILA DRAINAGE. THE STREAMS THE SPECIE INHABIT ARE USUALLY THE HIGHS INACCESS9BLE ONES9 AS SHOWN IN FIGURE 14. FOR THE MOST PARTS THEIR HABITAT LIES ABOVE 79000 FEET ELEVATION. FOR OBVi0U8 REASONS, VERY FE* ARE TAKEN BY ANGLERS9 AS-FISHING FOR THEM IN MOST AREAS REQUIRES A PACK TRIP. THE SAL MO . G I AE 18 THE ONLY TROUT NATIVE TO T41 S AREA AND WAS 1DENT ; M 1 ED AND DE- SCIt I BED BY R. R. M I LLER' OF THE UN I YEAST I Y OF M I CH I GAN (3 950 ). IT IS REPCRTI ED THAT ITS'' RANGE WAS VERY EXTENSIVE A.T ONE TIMES REACHING AS FAR DOWNSTREAM AS TH•E GiLA RIVER PRO- PER. NOW ITS RANGE 1S VERY LIMITED AND IN DANGER OF BECOMING MORE S13 AS FISHING PRES- SURE AND STOCKING OF OTHER SPECIES iNCREASESo 3. SALMO TR, T A S_ALmo TRUTTA WERE FOUND THE ENTIRE LENGTH OF THE MIDDLE FORK O THE G I L A R I VER9 IN ALL BUT THE EXTREME DER END. OF THE WEST FORK OF THE G I L.+ , AND I N MANY TR ; ?'STAR u EM OF THE TWO STREAMS. (FIGURE 15) IN SOME SECTIONS OF STREAMS S AL MO "RU7 A C-0M$T I TUTED A LARGE PER CENT OF THE FISH POPULATION. VERY FEW OF THIS SPEC.-ES APE PLAdfT.7D IN THE GILA DRAINAGE, BUT NATURAL REPRODUICTiON MAINTAINS A SIZABLE POPULATION OF THEM IN MOST STREAMS WHERE THEY ARE raumn-