IsochrysisIsochrysis is a genus of haptophytes. Until recently this genus was also thought to contain the 'T-iso' algae frequently used in aquaculture; that species has been reclassified as Tisochrysis lutea.SpeciesThere are six species:Isochrysis galbanaIsochrysis litoralisIsochrysis maritimaIsochrysis nudaIsochrysis santou – uncertain taxonomic status''Isochrysis zhanjiangensis''