Identification needed.

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Hello,

I’ve just found this guy in my tank tonight, no idea where/when he came from as I’ve only bought fish and corals. He’s larger than a 50p so must have been pretty small originally to get in here.

Is he ok to keep? I have hermit crabs/shrimps/corals.

TheJag77

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Reply #1

Do you have a better pic?


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Fakebarbie

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Reply #2

Hi

Yes I’ve just found him again now.
Seems to be a dark brown colour with a white band round him.
Just caught him with my Regal Tang in his pincers but not sure if he cause the death as the fish had become really timid over the past couple of days and has been constantly hiding under rocks.

Hopefully this is a better one for you.

Thanks
Suzi

TheJag77

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Reply #3

I’m no expert but think most crabs are not considered reef safe. Don’t think they will go after corals, but may go after other CUC or sleeping fish.
@ajm83 @mightyhatter
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Last Edit: May 18, 2022 1:21:00 pm by ajm83

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ajm83

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Reply #4

Hi Suzi, that's a cool little crab!   What corals have you bought recently?

Sadly as @TheJag77 says, most are not considered reef safe.

I've had a look through the common hitchhikers and can't find a match to the colouration.

The problem is most crabs are omnivore scavengers and have the potential to eat snails or corals. Not saying it definitely will do that, but there is a chance.
It's more likely to do this if the pincers are sharp, as opposed to the flat faced ones that mithrax crabs have (see attached pic)


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DUSTYBOY272

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Reply #5

This is a Ruby Mithrax I have in mine…. Is it similar?



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Fakebarbie

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Reply #6

Unfortunately that would explain why my starfish kept losing legs when it decided to venture into the rocks :( Also my touch, toadstool and Kenya corals all seem to have bits missing/chopped.

The crab isn’t hairy at all looks perfectly smooth and really dark in colour other than the white band that goes round him. I’ve just found him having a little wander now.

A1

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Reply #7

How cool is he/she!!!
*even if it is a pain

TBH if it was in my tank I’d be looking to catch it, then throw it into a breeding box/chamber on side of tank make a little habitat for and keep it there, at least until you can get an ID for it! I’d probably keep it tho.. my Kenya is dropping branches all the time you sure that’s not reproduction?

Only risk is it climbing out of said box/chamber, have you got a sump?


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Fakebarbie

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Reply #8

Hi,

Unfortunately I don’t have a sump so I have nowhere to put him.
He is pretty cool but seems to taken a liking to my cleaner shrimps now so I don’t think he can stay. Just not sure what I can do with him, will my LFS take unwanted crabs?

Pic cause he just came over to see what I was doing 😂

Thanks
Suzi

A1

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Reply #9

I would of thought one of your LFS would take him off your hands, someone somewhere is always interested in one of those rarities..

Are you anywhere near Essex?


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DUSTYBOY272

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Reply #10

Wow totally different to a Ruby now I can see it fully. Any progress with identifying it?


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Last Edit: Jun 7, 2022 12:27:14 pm by DUSTYBOY272

HK_Fuey

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Reply #11

If it was up to me I'd name it a teacher crab, as it has those little elbow patches only teachers have.
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