Verified Answer :

As far as I know about black snails is the fact that the Black Mystery
belongs to the genus Pomacea,  Ampullariidae
family. This family is also often called Apple Snail, and it contains a nearly
120 different species of snails. I know that increase in the number of black
snails can best be explained by the high teperature in which black snails are.
It's the main reason of their reproduction.