Review of the validity of scales to estimate age, growth, life history and maturity schedule of Hilsa shad Tenualosa ilisha(Hamilton, 1822)

This study reviewed the validity of using scales Hilsa Shad (Tenualosa ilisha) and other migratory species as a tool to estimate age, growth, maturity schedule migration. were used long ago, proved in several studies. Most these studies showed that could give valuable information, which be benchmarks fisheries plans for future successful management policies. Bt it needs Patience precision extraction because difficulties reading scales. The work need sufficient number practice, easily. As result, this will open doors closed decades set new migration tools Iraq.