Species: 40-65 μm long, 14-20 μm wide; anterior end rounded, posterior end pointed;
fusiform during locomotion; highly plastic when stationary; chloroplasts more or less bandform,
radially arranged; nucleus posterior (Kudo, 1966).
Fusiform, 40-80 μm long, 12-20 μm wide; swim rapidly (Illustrated guide, 1985).|
Mucous body granular in shape (An illustrated guide to freshwater zooplankton in Japan, 2000).
Images of collecting locality:
Ko-sumida river near Sakae-bashi (Sakae bridge), Kasukabe city, Saitama Pref., Japan, February 12, 2006 by Y. Tsukii