Red tides is a ubiquitous and natural phenomenon caused by the excessive growth of phytoplankton. It has caused serious social problems and heavy damage to fisheries worldwide. Therefore, this has become a major environmental issue in the world. The red tide occurrence can be affected by the effects of the initial cell density on the interspecific competition between different species of red tide microalgae. However, few studies have been focused on the interspecific competition between different microalgae...