Updating checklist of fishes of Khor Al-Zubair lagoon North West of Arabian Gulf

The present study described fish assemblages in Khor Al-Zubair lagoon North West Arabian Gulf using various fish nets, A total of 40 species belong to 29 families and 11 orders were recorded.It was found that order of Perciform dominated the ichthyofauna of Khor Al-Zubair lagoon, which represented by 14 families and 21 species. The percentage of very rare species of total number was 12.5%, including five species: Chiloscyllium arabicum, Mastacembelus mastacembelus, Otolithes ruber, Pampus argentetus and Strongylura strongylura, in this study, we used the similarty analysis between previous studies (Ali,1985 (study 1); Hussein and Namma,1980 (study 2) and current study (study 4),and the high similarity (58.62%) was found between study 1 and study 2 .