neritina pulligera, also steel helmet snail, brown racing snail or black ball racing snail in an aquarium with plants and stones

also animal aquarium aquatic ball black brown crawling dusky exotic fresh freshwater helmet horns house marine military mollusk molluska motion mouth natural nature nerite neritidae neritina pet plants pulligera racing shell slime slow snail snails steel stones stonesnneritina striped taiwan tropical turrita underwater water wet wild wildlife