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25 Largemouth bass: all YOY and juvenile forms of native fishes were affected. Razorback sucker young and Colorado squawfish were again specifically identified. Black bullhead: affect native fish larvae, YOY and juvenile forms, especially in backwater habitat Mosquitofish: affect all larval native fish. The Gila topminnow was specifically identified. Striped bass: razorback sucker young and Colorado squawfish were identified in particular, and all native fish life stages occurring in Lake Powell. Walleye: razorback sucker young and Colorado squawfish were specifically identified, though all native fish were considered vulnerable. Flathead catfish: not specifically identified by respondents in this question, though literature provides evidence of impact to stocked razorback sucker young. Brown trout: affect Rio Grand~ cutthroat and Gila trout Yellow bullhead and smallmouth bass: affect all endemic fishes in the Gila River Basin. Redside shiner: affect all larval native fishes. Rock bass: specific impacts to Pecos gambusia, roundnose minnow, Mexican tetra, and greenthroat darter identified Plains killifish: affects all larval native fish. Black crappie: affects all native fish young. White bass: June sucker specifically affected. Competition Each introduced species identified as a competitor was listed below followed by affected native species and life stage. Channel catfish: Colorado squawfish, razorback sucker, all Gila spp. were specifically identified Many other native species were considered affected, including tlannelmouth sucker, bluehead sucker, and headwater catfish (New Mexico only). , ~ 1 j Red shiner: Colorado squawfish young were specifically identified, as were Gila spp. and spikedace. All native species were considered affected, especially larval forms. I- f I ~