Tripos tenuis is a species of Dinophyceae in the family Ceratiaceae. They are native to Rio De Janeiro, SãO Paulo, Rio Grande Do Sul, Pernambuco, Bahia, and Espirito Santo.
Definition: Living in the fluid medium (water or air) but unable to maintain their position or distribution independently of the movement of the water/air mass (adapted from Lincoln et al., 1998).