This study describes the fish species composition and their length-weight relationships from Kundu Estuary (Antalya-Turkey). A total of 679 individuals (catch of 116.2 kg) representing 14 marine, freshwater and migratory fish species were caught by different nets from March, 2008 to February, 2009. Marine fish species represent the highest abundance (69.66%) and biomass (55.93%). Liza aurata was the most frequently captured species (38.9%), followed by cephalus (14.7%) and Dicentrarchus labrax (10.8%). The length-weight relationships displayed that six species grew positively allometric and four of them grew negatively allometric.