crab

At work today we had a crab come in that nobody can identify. We got it in a batch of emerald crabs, and it was labeled as a black emerald crab despite it not being one. Any ideas what it could be?

Hey I found this decorator crab at petco and I can’t seem to find what kind it is, it doesn’t look like the marcocoeloma trispinosum I have at home, any ideas?

I came home for work today and I found my largest hermit crab presumably dead next to my pulsing Xenia. I have 5 total and that was the biggest with bigger shells for him to inhabit. The fish are happy, pulsing Xenia and GSP are happy looking. Multiple zoa frags are open. Other hermit crab seem...

Wondering what kind of crab is this? I think he was found on Florida LR (not sure). He’s got black tipped claws and somewhat hairy legs (as you can see), which probably means bad news.

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...

At some point in the future, I would like to set up an aquarium with only invertebrates like snails, crabs, shrimp, brittle stars, and so on. (no fish or corals!) These are in my opinion, some of the most fascinating members of the aquarium hobby and reef ecosystems in general! So naturally I...

Reef safe or not? Thank you.

Having a hard time trying to ID this crab. He only comes out at night scavenging the sand bed. Anyone familiar with it? Reef safe?

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...

So this one of my hermit crabs likes to climb the edges of the tank and chill at the top. Is there a reason why he does this? He ends up falling down eventually and is fine but I’m just confused as to why he does this.

This crab came in on an alvepora I got at the lfs today. tossed it in the sump for now. Is anyone able to ID for me? Thanks!

Hi, can u tell me if this is an acro crab? Many thanks

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

I think spider decorator crabs (Camposcia retusa) are cool. I know they cant go with soft corals, but can they go with stony corals? And would they be able to go with five snails of varying sizes? And how long do they tend to live in captivity?

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

I just got a new Sally Lightfoot crab in my new aquarium. I just realized that it could be pretty aggressive, so I am wondering if there is any suggestion of additional crab food I can get to keep it nice and full so it won't eat my clownfish. Also, I am looking for suggestions on what other...

Hey guys! Well my 310gal has been up and running now since the Saturday of Labor Day weekend. I’ve had lights on it now for a couple of weeks. Just put my permanent light setup(coral cares) on it last weekend and have them on a 10 hour light schedule at only 20% intensity right now. I used...

I am pretty fixed on maintaining my macroalgae tank for now, but keep thinking about tank concepts all the time and I thought it would be fun to post another one. Have any thoughts/feedback on this hypothetical crab tank? Thanks all! Tank and equipment: - Aqueon Standard 55-gallon Tank -...

My black widow anemone had a little friend come with him. It’s obviously a crab what kind? will it eat my sexy shrimp - snails - pistol shrimp? Reef safe?? I have him in acclimation bin still.

I currently have a couple of turbo snails and small blue leg hermit crabs in my tank. Im guessing that eventually they will outgrow their shells and need replacements. I found a set of cool looking shells on amazon but I’m not sure if theyre safe for aquariums. For example it doesnt specify if...

The crabs I will be considering include the true crabs (Brachyura) and some "crabs" from Anomura, including hermit crabs (Paguroidea) and porcelain crabs (Porcellanidae). Horseshoe crabs (Limulidae) will be excluded. Over the years, I have heard mixed reports on how "reef-safe" crabs are in the...

I’m not sure how this works but it looks like I have baby somethings all over the place. This was filmed last night. This morning there is no trace of them but I’ll keep you posted if they’re back at night. The only thing they can be is baby crabs as I don’t have 2 of anything else in my...

I can not be sure how old they are at this point. She spawned 3~ weeks ago and again the night before I noticed these guys in the tank. I can’t really find any information on the emerald crabs life cycle and only ever see people sharing pictures/video of them free swimming. If anyone can offer...

Anyone ID this hitchhiker crab?