The cells are pointed apically and antapically (anterior and posterior end), with a long furrow,red-brown or orange chloroplast with a single pyrenoid (Throndsen et al., 2007).
Cells oval, slightly dorsoventrally flattened, with acute posterior end, rounded apically. Dorsal side strongly curved, ventral side almost straight with furrow. The flagella are equal in length.
Cells 10-12 µm long, 4 µm wide.Sites of occurrence in RSA:In Winter 2006 Cruise, along with diatoms and dinoflagellates, the small-sized autotrophic flagellate Teleaulax sp. was considered a significant contributor to the total phytoplankton abundance up to 92 %. The highest concentration of Teleaulax sp. reached 2.2 10 cells/l.Maximum abundance (> 10cells/l) was observed in the central part of the inner RSA;localized distribution was observed in the Sea of Oman (refer sites map).