The Partner states of the EAC through the Lake Victoria Fisheries Organization (LVFO) are monitoring exploitation of the fisheries resources of Lake Victoria. It has harmonized fisheries data collection around the lake including collection of information on trends of fishing effort and fish catches through Catch Assessment Surveys (CASs). The data generated by CASs provide Catch per unit effort (CPUE), which together with fishing effort information obtained from regular biannual Frame surveys is used to estimate catches. Data from CASs also provide a rough index of stock size. The monthly catches in this report, covering the period between July 2005 and December 2008 are estimated using raising factors from the 2008 Frame Survey data while those covering March 2010 and September 2011 are estimated using the 2010 Frame Survey.