## 3 Results  
A total of 6955 fish, representing 41 species, were caught in 39 sampling events at 16 wetlands (Tables A1 and A3). Of the 39 sampling events, 5 were in the OSM_Pre monitoring group (2005-2009), 5 were in the OSM_Post monitoring group (2010-2015), and the remaining 29 sites from 15 wetlands were in the Excellent IBI group. Excellent sites were represented by the most species (38) followed by OSM_Pre (14) and OSM_Post (12, Table A3). Five sensitive species were in the Excellent group, and none were in the OSM_Pre or OSM_Post groups. OSM_Post had the highest overall fish abundance, and the other two groups, OSM_Pre and Excellent, had similar values, but none were found to be significantly different (H = 2.044, \(p\) = 0.36, Table 1). The largest contributors to abundance in the OSM_Post group were FatheadMinnow (_Pimephales promelas_) (average of 182 individuals per sampling event) and Goldfish (_Carassius auratus_) (average of 107 individuals per sampling event), combining for almost 80% of the total catch. Brown Bullhead (_Ameiurus nebulosus_) and Common Carp combined for another 17% of the total catch, with the four species combining for 97% of the total abundance at OSM_Post sites. As a result, OSM_Post had the lowest Shannon-Wiener diversity index score, which was significantly different than the other groups (F = 5.994, \(p\) = 0.006). OSM_Post had the highest biomass values, but differences between groups were not significant (H = 2.6, \(p\) = 0.27). The Excellent group had significantly higher richness than both OSM_Pre and OSM_Post (F = 13.63, \(p\) < 0.001). Richness ranged from 8 to 19 at Excellent sites, 6 to 10 at OSM_Pre sites, and 4 to 8 at OSM_Post sites. Piscivore abundance did not differ significantly between OSM_Pre and OSM_Post but was significantly higher at Excellent sites (F = 26.7, \(p\) < 0.001, Table 1). Thirteen environmental variables were examined for significant differences between the Excellent, OSM_Pre, and OSM_Post groups. Of the 13 variables, 10 had significant differences between groups based on ANOVA (Figure 2). Dissolved oxygen, air, and water temperatures were not significantly different. Environmental variables were different between the Excellent and the OSM_Pre and OSM_Post groups for all ten environmental variables, and seven were significantly different between OSM_Pre and OSM_Post. The three variables not significantly different between OSM groups were WQI, conductivity, and water depth. Relationships between the fish community and eight environmental variables were analyzed using CCA to determine their relative influence on fish communities. The first two axes of the CCA explained 78.26% of the variation (Figure 3). The Excellent group is located on the center-left side of the plot, the OSM_Pre group is located on the right side of the center, and OSM_Post is on the far right side, as shown by 95% ellipses (Figure 3). ANOSIM results indicated the three groups were significantly different (R = 0.9797, \(p\) < 0.001) and that the difference was driven by the dissimilarity between Excellent and both the OSM_Pre and OSM_Post (\(p\) = 0.0003 for both) groups and between the OSM_Pre and OSM_Post (\(p\) = 0.0216) groups, as indicated by the pairwise results. WQI, SAV IBI, submergent vegetation, and water depth had the strongest relationships with the Excellent group, and conductivity and turbidity had the strongest relationships with the OSM groups. The species with the strongest relationship to the Excellent group, based on the CCA plot, were Johnny Darter (_Etheostoma nigrum_), Bridle Shiner (_Notropis bifrentatus_), sunfish species (_Leponis_), and Brook Silverside (_Labidestes sicculus_), and the species with the strongest relationship with OSM groups were Green Sunfish (_Leponis cyanellus_), Gizzard Shad (_Dorosoma cepidanum_), Goldfish, and Fathead Minnow (Figure 3). When all three groups were pooled, SIMPER analysis identified that Yellow Perch (_Perca flavescens_), Fathead Minnow, Goldfish, Bluegill (_L.