from the following article (http://reefkeeping.com/issues/2006-11/mg/index.php):
Do You Know Who You're Dealing With?
Get to Know the Real Ilyanassa obsoleta
"As with any claims that sound too good to be true, consumers should be skeptical of the claims being made about Ilyanassa as an ideal reef snail. Ilyanassa is not a reef snail at all. As a snail from cold and temperate water, keeping them at reef temperatures is sentencing them to a premature death. In addition, they aren't entirely reef safe, especially in tanks with sand beds.
We're all aware that our hobby has a reputation for being wasteful of and destructive to marine life. It's time for hobbyists to start making informed and responsible decisions about the animals we keep. With several truly reef safe snails available in the hobby, it is in the hobbyists' and snails' best interest to spend a little extra for more appropriate species, such as this snail's cousin, Nassarius vibex."
