Nassarius? Or snail murdering whelk?

[Aeiyr]

Hey gang, ugh. Second post today, but since me livestock arrived today I've noticed the dormant/adjusting trochus snails are being assaulted by the nassarius snails I received. Is this common?

Two trochus where kind of lazily out of the shell and a crab pushed them off a rock to the sanded. No fewer than 3 of the nassarius erupted from the sand to crawl all over it, even covering the hole like one was reaching inside to eat it.

And just not, I caught one of the nassarioud up on a rock, cramming itself into a trochus shell with the trochus pushed so far inside its not visible.

These Nassarius have also been active and all over my glass. Pictures posted. I did some digging, and now I'm worried they sent me a pack of murder whelks.

 

[CoralB]

Your tank and sand looks very new and clean . The Nassarious snails don’t have anything to eat which is probably why they are all over the snail . I would put food in the sand for them to eat ASAP

 

[Aeiyr]

Your tank and sand looks very new and clean . The Nassarious snails don’t have anything to eat which is probably why they are all over the snail . I would put food in the sand for them to eat ASAP

i dropped in half a cube of mysis and a cube of baby brine earlier. All of it went to the inverts tonight as the two clowns are not eating as they adjust from the move. I allowed the mysis to settle but perhaps i'll just drop the other half cube in or push it directly into the sand befor i crash tonight. i can always kick up the rest in the AM and let the floss take care of it or vacuum it out.