This study describes the length-weight relationships (LWR) and condition factors of 21 fish species from 15 families of ecological and economic importance, found in Ologe Lagoon, Lagos, Nigeria. A total of 1353 specimens were caught by local fishing gears from January, 2007 to December, 2007. The slope (b) values obtained for the 21 fish species ranged from 2.012 to 2.991, and diferred signific...