Optediceros breviculum

Optediceros breviculum, common name the red mangrove snail, is a species of minute operculate snail, a freshwater or marine gastropod mollusc or micromollusc in the family Assimineidae.

Distribution
The distribution of Optediceros breviculum includes:
 * Bangladesh
 * China and Hong Kong and Taiwan
 * West Bengal in India
 * Japan
 * Malaysia
 * Myanmar
 * Philippines
 * Singapore
 * Sri Lanka
 * Thailand
 * Vietnam