Fisheries status in the Bardawil Lagoon, during the period from 1985 till September 1997, was greatly varied. Analysis of
the yearly yield composition showed that the production of sea bream gradually decreased from 69.2% of the total catch during 1985 to only 5.5% during 1997. In contrast, the crustaceans (crabs and shrimps) which didn't represent more than 1.5% of the total catch till 1991, sharply increased during 1997 to 52.6%. Ecological and biological conditions in Bardawil Lagoon and the causes which led to these variations in the yield composition were discussed.