WorldFish has developed an Electronic Pond Book in the form of a of Microsoft Excel workbook. The primary purpose of the Electronic Pond Book is to capture data relating to the management of all ponds used in the Carp Genetic Improvement Program (CGIP) in a single repository accessible by multiple users. Furthermore, it allows the tracking of fish movements and water movement among ponds. For each pond a current feed, fertiliser and treatments regime must be specified. Data entry errors are minimised through the specification of click down lists for many inputs. Outputs include estimates of fish weight by pond and species, estimates of feed, fertiliser and treatments required in coming days and summaries of water chemistry, Secchi disc measurements, water depth, feed inputs, fertiliser inputs, water/pond treatments, weight of randomly sampled fish and mortalities by pond over time.