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during both years (2003 and 2004). Dissolved oxygen was monitored for multiple 24- hour periods when conditions appeared to be marginal. Water quality data including depth, temperature, dissolved oxygen, pH and turbidity was monitored over a 24 hour period for multiple days at approximately one week intervals between June 25 and July 15, 2003 with a Hydrolab H2O multiprobe (Appendix). A staff gage was placed at the deepest site in a center enclosure and checked every few days to monitor maximum depth in the enclosures. Zooplankton samples were taken in 2003 to monitor conditions within and outside the enclosures to detect potential problems affecting razorback sucker survival. Zooplankton densities were also monitored visually during bi-weekly visits and were determined to be very abundant both within and outside the enclosures. Fish Introduction - 2004 Larval razorback sucker were introduced into twelve enclosures on 26 April 2004 at the following densities: 400, 800, 4,000, 8,000 and 40,000 larvae/acre (Table 2). Larval bonytail acquired from Dexter National Fish Hatchery were introduced on 4 May into two enclosures with razorback sucker larvae at the same density of 8,000 larvae/acre, for a combined total of 16,000 larvae/acre. Nonnative fish species were collected from The Stirrup floodplain wetland on 27 and 28 Apri12004. Nonnative fish introduced into each of the ten treatment enclosures included 38 fathead minnow, 21 red shiner, 8 black bullhead, 12 green sunfish, and 2 carp. Numbers and species composition of nonnative fish introduced was based on observations from earlier studies that documented initial relative abundance and species composition in a reset wetland (Birchell et. al. 2002). It should also be noted that in a 6