Objective of this work is to in troduce us to the methods of genetic enhancement of seabass ( Dicentrarchus labrax L.). Through various procedures we will explain how to genetically improve mentioned species, and make it more economically profitable. Breading of seabass as an important aquacultural species since 1980 is in a constant growth. Today triploid and tetraploid seabass can be achived by retaining secondary polar body, using phisical or chemical methods. It was experimentary approved that it is the best time for triploid induction in sea bass five minutes after fertilization in duration of 10 minutes shock and sea water temperature need to be 0° C. In the farming of the two year old sea bass the bigger benefit in comparison to diploid wasnt shown. After four years of farming triploid sea bass is not showing differences in weight in comparison to diploid. Tetraploids are made by stopping the first mitotic diobe, destroying the tubes of mitotic spindle. It was established by experiments that the biggest percentage of tetraploids is obtained 70-90 minutes after fertilization and intensity of a pressure shock of 81-91 MPa.