I've had one and it didn't pick on my turbo snails. I don't know about the hermit crabs though. Good luck. I love these fish with the polka-dots ! :jumping:
Mine leaves the snails alone but my emaralds have gone missing. :thinking:
I have lots of small blue legs and they do fine.
NO shrimp!!!! They will hunt them down until they are all gone.. :hilarious