Neripteron vespertinum is a species of freshwater snail,[1] an aquatic gastropod mollusc in the family Neritidae.

[2] Its shell is flattened, generally thin, covered in a thick epidermis, and has a smooth interior and exterior.

[4] The width of the shell can go up to 1 inch, with wing resembling projections that start from the apex.

[5] This mollusk is almost always found in freshwater,[3] specifically the slightly briny bottommost untouched small streams near big rocks.

Even more so, runoff or extensive flooding-resulting in high sedimentation turbidity, nutrients, trash and other pollutants emptying into streams, rivers, estuaries, and oceans also pose a crucial threat.