Live Rocks came with Pest

Has any one have problems with getting live rocks and having unwanted species?

still new to the hobby need help finding what these things are if their hazardous

 

THe things with tentacles looks like an aiptasia to me.

aiptasia anemone - Google Search

I don't know about the crab, can't see very well on the pic. Try using the macro feature of your camera.

 

Second pic is Aiptasia anemone. Bad for your tank. Try to get rid of them before it spreads.

 

Unwanted hitch hikers is why many of us buy 95% of our rock as dry base rock and then seed it from a trusted source during the cycling phase.

Here are a few good sources

Eco Rox ( Fiji Dry Rock ) - PRODUCTS - English

Marco Rocks The finest aquarium rock available, base rock, live rock, reef rock, marco rock, reef tank saltwater fish, live corals, Marco rocks, Fiji live rock, Tonga Live rock

ReefCleaners.org | Clean Up Crews and Macro Algae - Rock/Mud

 

what do i need to buy to get rid of them? lady at a LFS told me to buy a peppermint shrimp to get rid of the aiptasia but the shrimp not eating.
is there a way to get rid of all them or do i have to get new rocks

thanks for the feed back. very usefully link. if i was were to buy dry rocks do i need to cycle in a smaller tank?

 

Give the shrimp some time, if its an Appy it will.

As for the crab kinda looks like a Emerald to me but look at the claws,
if they are sharp and pointy at the ends = BAD, if rounded at the ends = Good

 

How old is your tank? Did it already cycle?

 

it looks like a emerald crab

 

i second emerald but im not sure. look it up in google and see if thats what it looks like.

if it is then i think its a good hitchiker.

you can kill the aipstasia by injecting it with boiling water.

 

tank is a month old not sure if it cycled

how do i inject it with boiling water?