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239 mm). We detected bonytail by raft electrofishing from about 100 m upstream of the boat ramp downstream to just below Jones Hole Creek (RK 544.5), a dispersal distance of 9.7 RK in a maximum time of 11 d. The largest concentration of fish was in pools and eddies within about 200 in downstream of the boat ramp. We captured several individuals and let 60 or more go unnetted, and quit sampling after that until we were about 800 m below the boat ramp. We did not net many individuals and stopped sampling in that reach to reduce stress on stocked fish, because electrofished individuals displayed flared gill covers and a rigid body. We also sampled bonytail with trammel nets in Whirlpool Canyon that same night and captured nine individuals, along with 15 roundtail chubs and a single humpback chub. Bonytail were captured mostly in eddies and pools 2 to 3 m-deep, but we also captured them in swifter runs and riffles with current velocity of 0.7 m/sec or greater. Individuals from riffles were apparently feeding, as several plump individuals excreted algae and insect parts upon handling after capture. In general, bonytail appeared in good condition. Dorsal/anal fin ray counts of individuals examined were all 10/10 (N = 13) or 10/11 (N = 2). Bonytail ranged in size from 201 to 285-mm TL; the mode of the size distribution was the 226 to 250-mm TL size class (Fig. 17). We also found a bonytail that had been consumed by a 330-mm TL smallmouth bass. The bonytail, about 225-min TL (68% of bass length), was noted because the caudal fin was protruding from the esophagus into the mouth of the bass. We documented a similar instance of predation by a smallmouth bass on a stocked bonytail in summer 2005 (unpublished data). We did not detect bonytail in Lodore or Whirlpool canyons in 2002 or 2003. Bonytail were stocked in the Green River in Browns Park (4 October 2002, RK 597, n = 8,600, mean TL = 224 mm) and Echo Park in 2002 (10 October 2002, RK 554.6, n = 5,000, no mean TL reported, assume 224 mm TL) in autumn 2002. Our autumn 2002 seine sampling on 10 October occurred six d after stocking in Browns Park, when we found the single near-dead individual. Our autumn 2002 trammel net sampling occurred the day of stocking at Echo Park. Since we were downstream several km we would not expect to capture any of those bonytail that same season. Bonytail were stocked in the Green River at Echo Park in 2003 (7 October 2003, RK 554.6, n = 56