The organism described exhibits varied shapes such as short or elongated spindles, cylindrical forms, or band-like structures. Its pellicle typically shows longitudinal or spiral striations, with some variants having a thin and highly flexible pellicle while others display regular spiral twisting. A stigma is usually positioned at the anterior end. Chromatophores, responsible for photosynthesis, vary in shape from numerous discoid or band-like structures to fusiform shapes. Pyrenoids, which may or may not be enclosed by a starch envelope, and paramylum bodies, which can be two in number located on either side of the nucleus or scattered throughout the cell, are present. A small contractile vacuole is located near the reservoir. Reproduction occurs primarily through asexual longitudinal fission, although sexual reproduction has been observed in species like *Euglena sanguinea*. This organism is commonly found in stagnant freshwater environments, particularly where algae are abundant. In high numbers, it can form a green film on the water’s surface, and resting or encysted stages may produce noticeable green spots on the bottom of ponds or pools.