unexpected crab!

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Hi all, really hope your expertise can help me. I am very new to marine keeping, I have had the tank set up since Christmas and started it with some reef rock. Currently only inhabitants are a  hermit crab and boxer shrimp...HOWEVER, we have recently noticed this little fella coming out. He is definitely a crab, red with white spots and very red legs (colouring on the photo is not great because of aquarium lighting and my poor phone quality!),He is about the size of your fingernail on your little finger!. He could only have come in on the reef rock. Anyone know who he is and if he is or will be harmful?

Ratvan

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Reply #1

Is there anyway you can set a trap for it? Also are those white marks raised or a pattern?

I'm thinking either strawberry crab, or Xanthid.

Axie

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Reply #2

I will try but he is very shy and runs into the rock as soo  as I get my camera out. We think the spots are raised...

Ratvan

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Reply #3

I will try but he is very shy and runs into the rock as soo  as I get my camera out. We think the spots are raised...

To get a full ID. Need to see claws and the under carriage. If the claws look Blunt TYPICALLY they're algae eaters. The pattern worries me though looks like it would eat Corals, specifically Zoas and Palys which means toxic crab...

How would you feel about posting it?

Axie

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Reply #4

Googling the 2 suggestions he looks very much like a strawberry crab, hopefully he will be peaceful . I will try to get a better pic especially of his claws. We dont have any corals yet.

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Ratvan

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Reply #5

Strange auto correct, sumping not posting.

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DUSTYBOY272

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Reply #6

What’s it feed on?


Sent from my iPhone using Tapatalk

Ratvan

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Reply #7

Strawberry is an algae eater

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Animal

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Reply #8

It could also be a .....   guard crab ....
They pretty safe , they sometimes live in amongst a coral (or rock ) if in a coral it will protect the coral from being attacked , hence getting the name of
Guard crab ,
There's a few different colour variations but if you look up ... coral guard crab .... you'll find loads of info and if you type it in then click on images you'll see loads of different varied colours .
Loving the little fella though , nice addition you lucky bugger .lol
Dave
 8D

Animal

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Reply #9

I agree , Be nice to see some better pictures of him if possible ,
Dave
 8D

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