There are some species of whelks that are labeled as conchs. Whelks are carnivores that mainly eats bivalves and other snails. I was once sold a crown conch. After doing some research on it, I found out that it's primarily a predator. Had to get rid of it right away since I have tridacna clams in my tank. I favor them more than a $2.50 predatory snail in my tank. That's just me