crab

So uhm, I actually posted about this one the other day. But I now have clearer pictures of these tiny 'maroon / brown' crab hitchhikers. They are only ¾ to an inch in size and their 'shells' are full of bumps. I assume some of them are females because I can see them carrying black eggs...

Can someone identify these hitchhikers? I got them from the live rock I purchased. Are these good or bad?

I picked up a bit of CUC to clean my tank of diatoms. Do hermits and shrimp eat that? I was told they do but I haven't seen them actually eat any of it. My Mexican grazing snails, conch, and urchin are doing almost all the work. When I feed Flakes I feed just for my fish but when I feed Flakes...

Over 3 months in and I’m still finding unknown critters at night. I need help identifying this crab. I’ve never seen a crab like this with such long antennae. It is really little and only comes out at night. P.S. I apologize for the shaky camera work. I had a flashlight in one hand and the...

Hi everyone, can you help ID this crab. It’s very shy. I have never seen it come out completely of the rock work. This is the best picture. I have been able to get of it. thanks!

Found this little guy while dipping my newly bought Trachyphyllia. Can anyone confirm if this is gorilla crab or any other species? He is very small, body is ~5mm in diameter.

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.

Red Mithrax? Had reason to put some rock in the sump. Just found this crab eating a bristleworm. Worm not happy

Can anyone ID this crab for me? I found it in my tank this morning. It’s about an inch long. I’m not sure if it’s just the shell, as it’s quite soft and not moving. Thanks

can anyone help id this hitchhiker crab i just found in my tank? would like to know if its good or bad its light brown with white claws with brown tips, abit hairy on body and legs

Looking for an Arrow Crab. Wanting to take care of some Bristleworms before they get out of control.

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.

Just showing off my Emerald Crab ... mildly aggressive little fart. I typically treat him 2-3 times a week with a small piece of shrimp (frozen raw) tuck to the end of a stick so no surprise he gets excited when he sees a stick!!

I have an adult female horseshoe crab for about 1.5 year now. She is doing very well. She eats well, unbothered, and very actively digging . The problem is she has developing shell disease :confused:. No other horseshoe crabs have this problem. Its only her. Her shell is very rough as she has...

Caught this little punk eating my new fuzzy mushroom coral, you guys think he’s a gorilla or Florida stone crab? Have him relegated to sump duty until I decide on what to do with him, he’s one ugly guy though

I was just wondering what a good place to find hermit crab shells is for online? Everywhere I look they are to big and or for land hermits

Accidentally got this guy in with a few blue legged hermit crabs I bought a few weeks ago. I've tried to look up what species he is, but no luck. He seems to have vertically striped black and white legs, with horizontal white stripes at the joints. His claws look the same size, though he's so...

Hey guys, wondering if I could please help getting some ID on the crabs, The filter feeding crabs have spread like wildfire. I have seem at least 7 new tiny ones perched atop the rocks. The bigger ones tend to stay hidden a bit more.

I am located in NYC. Willing to buy and trade locally, but also willing to pay shipping to buy pom pom crabs out of state. If you know of any sellers selling them, please do let me know!

Hello! I run a 20 gallon tank with a few easy keeper corals. I’ve had the tank for close to a year now and last night I noticed a crab hiding between the rock work in my aquarium. Based on what I’ve read it’s rare for these guys to be beneficial and was wondering if anyone had advice for finding...

So I can ID one is a hermit crab, but not sure what type it is. Second snail looks like a small whelk but I’m not sure. Are they both ok? Nanotank.

Was wondering if anybody had any idea why our new emerald crab has a whole with black/white coloration in one of its claws? We just bought her and came home and noticed it. She’s in quarantine. Thanks!

We bought this “emerald crab” today and just want to confirm whether or not it is actually an emerald crab because it is not green like most of the pictures online. We were thinking that maybe perhaps because it is juvenile that it hasn’t turned green yet. Also when we got home we realized that...

We are brand new to the saltwater scene. We have 4 dwarf red and 4 dwarf blue hermits. One of our dwarf blues looks just like the first picture which I found posted on another thread. My crab is in the blue circle in the second picture. Wish I could get a better picture. Will try to get one...