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li a rt ~iate- :IOp- ~..!F 'able `=" `-~ rlier, ~ _ - ~an's ~ - - frOrrt - serf ` are ~~_ able- '' ding cad, - alt ~ - = "= are - - plies - _ the ~ - = UarO , - rked "' ~ = tore; ~ -•-. ~rOT from ' ~ - oirs, - _ . - ~, Or arld ' :ally t_ r~~.,~_ -- __-_-__ __. ___ ~ --=_ - .-. __ for recre5tiortal ~ purposes (for example, Pena Blanca, Parker Canyon, Riggs Flafi; Wood's Canyon, and many fakes on Indian lands). Most of these support' trouts and- in some instances .warmer-water fishes such as largemouth bass; bluegili, and catfishes: Smaller ponds at low eleva- tions are often too severe in temperature or some other factor for develop- ment of fisheries,- although Tilapia, an introduced cichlid genus from the Eastern Flemisphere; has been used near Tucson (McConnell, .1965, 1966).. _ Above the deserts, smaller ponds or tanks of#en produce spectacular yields- _ . of fishes.°'Exampies of lentic habitats in Arizona are pictured in Figures 9 through 12. s ~ ~~knrx z, z.y,., , ,.. - .. , ,... F ~- , F,~ ~_ ...,.'~~n. .. r ..... ~ s..r;~' .r r:J,oL::. ~f , y_ .~ ..s„rxj;-.~ ~~ _ .- Figure 9. _Natural depression "fake" at about 3,000 m above mean sea level, Greenlee County, A'-iYOna. Such habitats rarely support -other than introduced- saimonids, but provide substantial breeding habitat for native frogs and other amphibians. - y _ r:~ __ -_~ ~-,~ _~. , . a~.. k~ I r?,{ - ~-~ - _ .. 4 r - __ -- ,s ~ r ` n ~., i t r N _ _ r. ,~ ,4 7:~ _. Figure 10." RobsevelF Dam and Reservoir, Gila County, Arizona, on the Salt River; first of a chain of lakes which impound the lower portion of the Salt River Canyon. ,. 3