Microalgae such as Chaetoceros gracilis, C. calcitrans, Chlorella salina, C. marina,
Chromulina pleoides, Dunaliella tertiolecta, Isochrysis galbana, Nannochloropsis oculata,
Pavlova lutheri, Skeletonema costatum, Tetraselmis chuii, Thalassiosira sp., are microscopic
unicellular phytoplankton having size less than 10 μ, and have widely used in the aquaculture
industry. The selection of these live feed organisms are based on many factors such as
nutritional requirements of the cultured larvae, size of the mouth gape of larvae, development
of the digestive tract of the cultured larvae, nutritional value and availability of the live feed
and suitability for mass scale production. Though much efforts are been taken world-wide
to supplement live feed totally or partially with artificial feeds, various studies pointed out
that supply of suitable live feed organisms fortified with vitamins and fats are essential for
the successful completion of the larval stages
