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Inventory of Large-sized Fishes Composition and Abundance Electrofishing, trammel nets, and trap nets mostly captured sub-adults and adults of the larger-sized fish. Of the 21 fishes collected during the entire study, 15 species and three hybrid suckers were collected with these three gear types (Appendix; Table A.1.). Eleven species and two hybrid sucker were nonnative whereas four species and one hybrid sucker were native. Three additional species, red shiner, sand shiner, and western mosquitofish, were collected with seines. Endangered Fishes. Nineteen adult Colorado squawfish were captured in both Gardner and Hotspot ponds. In Gardner Pond, three were captured during pre- runoff, seven during runoff, and two during post-runoff. In Hotspot Pond, one was collected during pre-runoff, six during runoff, and none during post-runoff. Eleven of these fish had been captured previously (Appendix B; Table B.1.). In Gardner Pond, Colorado squawfish comprised 0.60% of the fish collected during pre-runoff, 2.49% during runoff, and 1.46% during post-runoff. In Hotspot Pond, Colorado squawfish comprised 0.14% during pre-runoff and 1.87% during runoff. Five of these 19 fish were implanted with 360-day LOTEK° radiotags and translocated to the Lower Gunnison River as part of another study to evaluate if adult Colorado squawfish would use the fish passageway at the Redlands Diversion Dam. One Colorado squawfish died in a trammel net. No other endangered fishes were collected. Pre-Runoff Sampling. Native fish comprised 15% of the 663 fish collected from Gardner Pond whereas only 3% of the 697 fish collected from Hotspot Pond were native (Figure 4). Between 9 and 19 April, the three most common fishes collected from Gardner Pond were black bullhead (36%), and white sucker and common carp (19% each). Species relative abundance was similar for Hotspot Pond: black bullhead (31%), common carp (26X), and white sucker (18%; Table 1). It was assumed that all fish were removed in December 1995 when Gardner Pond was drained. Data from the April 1996 inventory indicated that nonnative fishes invaded and recolonized Gardner Pond within the 4 months following construction of the connection channel but before the April sampling. Species such as black bullhead, black crappie, green sunfish, and largemouth bass probably originated from neighboring Hotspot Pond. Runoff Sampling. Native fish used these two connected ponds mostly during runoff. Native fish comprised 39% and 13% of the catch in Gardner and Hotspot ponds, respectively (Figure 4). Of the 282 fish collected in Gardner Pond, the most common fishes collected were flanneimouth sucker (33%), green sunfish (24%), and white sucker (21%). Of the 321 fish collected in Hotspot Pond, the most common were white sucker (33X), black bullhead (18X), and bluegill (13%; Table 2). 10