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Decorator Crab

 
The Sponge Crab is more commonly known as a decorator crab. They get this name because they will take different items and attach them to their body camoflaging them to their surroundings. With this particular species,...


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If you love crabs this is one you want but it's not reef safe featured

Comments I love crabs, have since I was a kid, so I've kept many different types of them. I continue to find the decorator crab to be a favorite. They get their name because they take bits of their environment and stick them to their body. They can blend in so well that it is sometimes difficult for even the human eye to spot them.

This habit of decoration is also the main drawback to this crab. It will take your polyps and stick them to your shell. Depending on your tank, this could be a nightmare. A friend of mine spent quite a bit of money getting a frag of just three blue zoanthus polyps and found them stuck to his crab the next morning. If you have a large tank with large colonies, this might not bother you, for me, it always does, so I keep this crab in a fish only or by itself in a nice little 10 gallon species tank.

Like other spider crabs, they are semi-aggressive hunters. This means they may kill other smaller crabs, like your hermits, or eat your snails, even small bottom dwelling fish are game if they get a chance at them. At their full size of 4", they are something to look out for.

Kept in the right tank, it's an easy crab to keep, very interesting to watch, and will be one of those show pieces your friends will talk about. Kept in the wrong tank, it can do actual damage.


Liked about it 1. Very interesting behavior.
2. Impressive size when full grown.


Didn't like 1. Semi-aggressive.
2. Puts your corals on its back.
3. May kill your clean up crew. I say may, because if this crab is target fed, it may not.


Overall rating:
 
5.0
Overall satisfaction:
 
5.0
Would consider buying it again:
 
5.0

By tcamos
Sep 21, 2010
 
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A bulldozer crab!

Comments This exotic crab is called a decorator crab for a reason! They will literally attach anything to their backs. I'm not talking about a few pieces of chipped rock here and there, I mean corals too. Mine even tore apart some of my feather duster. Every morning I would find my corals on the sand bed. These guys are absolutely bulldozers! When I tried to remove him from my tank, he buried in the sand in a matter of seconds. I had to catch him at night. Overall, only get these in a large reef tank. Next thing you know that "Ultra rare rainbow spectacular" Zoanthid frag you just bought is on it's back!


Liked about it Exotic looking

Funny character


Didn't like Bulldozer

Attaches corals to it's back etc.

Can be hard to catch


Overall rating:
 
1.3
Overall satisfaction:
 
1.5
Would consider buying it again:
 
1.0

By Coreyb
Jan 10, 2011
 
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perfect crab!!

Comments i have a decotator crab on my 10gal tank, he moves slowly through the place disguising itself with the background. the reason i love this crab is because he attached a piece of clove polyp to its back and it stayed and multiplied there ever since


Liked about it -adds variety
-fun to have around
-mixes with the enviroment


Didn't like -might attack other fish/invertebrae
-could cause damage to soft corals


Overall rating:
 
5.0
Overall satisfaction:
 
5.0
Would consider buying it again:
 
5.0

By gabranth17
Mar 18, 2010
 
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fun guy to have around

Comments The decorator crab is a nice addition to a FOWLR set up. This crab is not reef safe. They attach pieces of debris, sponges, algae, tunicates, or ather animals to these hooks, becoming quite camouflaged. Thye make an interesting display in a tank of their own. They prey on small animals.


Liked about it I like how they decorate themselves with misc. items in your aquarium.


Didn't like Novice aquarists often think that having a decorator crab in their tank is a good thing, but it soon becomes apparent that they prey on many sessile or slow moving invertebrates like hermit crabs, clams, and feather dusters. This crab is also known to rearrange its camouflage to match its new home by tearing off pieces of soft corals, zoanthids, sponges and other decorative items to attach to its body.


Overall rating:
 
3.0
Overall satisfaction:
 
3.0
Would consider buying it again:
 
3.0

By 9erNation
Feb 10, 2010
 
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Need, somewhat harmless crab

Comments This crab takes piece of coral/rubble and attaches them to itself as camouflage. Pretty harmless in my experience, but it may relocate your prized pieces if they're not securely attached.


Liked about it I've never seen them to be aggressive, and they're a lot of fun to watch. It's amusing to watch some of your zoanthids or other small pieces crawl around the tank.


Didn't like May move some of your corals around, so if you've got something you really like in a specific spot make sure it's properly anchored. Otherwise, nothing terribly negative to say about these crabs.


Overall rating:
 
3.5
Overall satisfaction:
 
3.0
Would consider buying it again:
 
4.0

By crvz
Jan 06, 2010
 
Last updated: May 17, 2010
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Amazing little creatures...

General Amazing little crabs... fun to watch and the kids love them.


Liked about it Fun to watch, no maintenance, kids love to watch them.


Overall rating:
 
5.0
Overall satisfaction:
 
5.0
Would consider buying it again:
 
5.0

By Big D
Jul 16, 2009
 
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wierd but kewl

General These guys are great to have if you like interesting things to look at. They do however pic things up and put them onto themselves to hide a bit more. I have seen them with mushrooms ont ehm and everything.


Liked about it Love the way that they look


Didn't like Hate the way they disturb things.


Overall rating:
 
4.5
Overall satisfaction:
 
5.0
Would consider buying it again:
 
4.0

By winnker
Jun 11, 2009
 
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