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Scientific Name: Bithynia cerameopoma (W. H. Benson, 1830)
Photo: Peter Glöer1 & Ulrich Bössneck2
Classification:
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Littorinimorpha
Family: Bithyniidae
Description:
The shell of this species is conical and solid, exhibiting a yellowish-white color, with 4.5–5 regularly increasing convex whorls. The umbilicus is wide, and the aperture is oval with a slightly reinforced lip at the base. The shell’s dimensions include a height of 9–10.5 mm and a width of 6 mm. In terms of the animal’s characteristics, it has a light grey snout with whitish tentacles. Regarding penile morphology, the penis is bicolored, featuring a white penial appendix located near the central part of the penis, and a long, robust flagellum. A distinctive feature that sets this species apart from all other Bithynia species is the wide umbilicus and the presence of a lip at the base of the aperture.
Habitat & Distribution in Bangladesh:
Found in stagnant freshwater like ponds, lakes, pools ditches or sluggish streams. Abundant in Brahman baria, Comilla, Habiganj district.
Environment:
freshwater