Phytoplankton: Usually referring to the species Isochrysis galbana. A motile brown algae. Cells golden colored spheres ~6┬Ám in diameter with 2 flagella at the end of the cell. Extremely useful in greenwater applications, considered essential for the rearing of some marine finfish, becoming a go-to feed for calanoid copepod culture, and widely used in mollusc culture. High DHA content