I know mystery snails are related to apple snails . And sometimes they do get mixed up,but in the state I live in , mystery snails are legal but the larger varieties of apple snails are illegal for it being a pest . So I would just like to know if this is just a large brown mystery snail or a larger species of apple snail . It was sold to me a s a brown mystery snail a year back . Here’s a pic of my questionable snail and my regular ivory mystery snail together .