Reviving this thread thanks to google.All I can find as far as negatives is they get kinda big and can move around some corals and rocks, but nothing about eating them or fish. Maybe a large snail for a new shell though.
Perhaps others have some first hand experiences with these guys.![]()
I put a Halloween hermit in my tank yesterday. Today I only saw 1 nassarius snail and thought “hmm. I wonder if that Halloween got them.” I looked, couldn’t find any shells. So, when I fed tonight, expecting the nassarius to come up from the sand, only 1 was there. The hermit and snail were pretty close to each other and the hermit darted for the nassarius and started to attack it! It was thrilling.
I’d stay away from these guys unless you’ve got big conch shells cuz they will destroy snails.
Mines going in my sump for now. I love how cool they are but the sump is his new home until I can find some shells.


