Tripos sumatranus is a species of in the family Ceratiaceae. They are native to SãO Paulo, Rio De Janeiro, Espirito Santo, Amapá, Paraná, Rio Grande Do Sul, Bahia, Santa Catarina, Ceará, and Pernambuco.
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).
