crab id

Hey everyone, need help identifying this crab, was sold to me as a emerald crab, I have some doubts. Emeralds crabs are pretty hard to find in Australia, soo thought I would take the chance and buy it, just seeing if anyone can confirm if its a emerald crab, or a pest crab. Thank you in advance

This little guy was inside a live rock I collected from the sea shore ..he’s very small. Plz help id it.

I have recently bought this crab from my LPS and they labeled it as a Sand Sifting Crab, which it is but I was wondering if someone could ID it so I can do more research on its compatibility within my tank. They told me they believed it was reef safe with caution, but they also didn't have much...

Finding hitchhikers (benign ones especially) is actually one of my favorite things about reef-keeping! And today I noticed a new friend in my 1.5 gallon that I most definitely did not add. It’s a beautiful little crab, but not particularly active— I’ve never actually seen it move, just sort of...

Just curious if anyone knows the proper identification of this crab? The guy at the store said it came in on some rock in an NPS coral shipment. He ate one of my tube anemones unfortunately so I put him in this breeding box for now Thanks!

Emerald crab? I purchased 4 small emerald crabs months back, and just came across this big boy in my tank. I was in shock at his size already. But not really sure what type of crab he is or if he’s reef safe. Any help is appreciated. Thank you

Crab came in on an order of Green Emerald Crabs Snail came in with an order of Astrea snails Any ids? Both are in my sump now

What crab is this? It does that arm rolling all day everyday.

I just found this molt on the rockwork of my aquarium and I realized I have never knowingly put a crab like this in my tank. Does anyone know what kind of crab this is? It's barely the size of a dime. I tried to ID it using Google search by image and I kept getting either large Land crab...

Reef safe or not? Thank you.

Is it Gorilla Crab? Right? Crab‘s pincers end is black. Is it eat Acro? I thought it is a very cute…

I found my six line wrasse and green chromis MIA a month ago, and yesterday night I found this thing in my living rock, its a kick in my balls to get it out (no fish so I used the brute way:freshwater bathed the living rock for around 3-4 mintues).looks kinda like gorilla crab,this crab is...

Hi guys, i'm reasonably newer to the fish tank hobby! I have had this crab in my tank for about a year now. Bought as a little green emerald crab and then it shed and turned red a few times and has grown quite large. No idea what type of crab he is, and whether he will be harmful to the other...

Can anyone help me ID this crab and is it coral safe? I noticed my zoas have been looking poor and dissapearing and not sure if this guy is to blame. Video is attached along with some photos. cheers

Curious if anyone knows what kind of crab these two are.

Anyone ID this hitchhiker crab?

Hi all, need help identifying this nocturnal seemingly filter feeding crab.

I have a crab I caught up that is now killing every expensive fish I've bought. (Two lions and a cowfish)

This little guy has been eluding my camera for quite a while now, but I finally got a picture of him. He was a hitchhiker on a Petco rock and he’s super chill. He hides most of the time and only comes out when food is close to him.

I have had this little guy come with my live rock. The tank has been up and running around 5 to 6 weeks and he’s still here. Very small and timid. If anyone knows what it is I can’t figure this one out.

Found this lil hitchhiker tonight, anyone actually know what kind of crab it is? And please don’t just say “how cute” or “I want one” Thank you!

I found some type of crab in the Hikari half shell clams when feeding the tank? Should I toss the bag or consider it a snack for the tank? Also what kind of crab is it?

Got this small hitchhiker crab on a coral, its maybe 1cm at most, looks super cool, but dont want to put anything too dangerous in my tank. Grains of sand for size reference Any id or advice? Its just in a bucket with a heater now.

Been losing healthy jawfish at night, could this crab be the reason? thank you

It only recently moved to a part of the rock where I could see it. It doesn’t appear to ever leave this rock. Need an id to know if it is reef safe/ isn’t going to outgrow it’s rock… and my tank.