ID on 2.5" wide crab

[Brian Crook]

Found this guy in my aquarium tonight when I was looking around with a flashlight. Definitely the largest hitch-hiker I've ever had...

He's about 2.5" across and is grey in colour, with fairly thick (and sort of hairy) legs, kind of stubby.

I thought it was an Emerald Crab, but I'm not sure... ID please!

Thank you

 

[donut0079]

Does not look like an emerald to me. Seeing the claws would help.

 

[Sugar Magnolia]

It sure looks like a mithrax crab to me.

 

[Calappidae]

Looks a little too fat for a mithrax, is there any way you can get a front photo of the crab?

Might just be the way the legs are tucked in.

 

[donut0079]

I agree the angle is tough. The more I look I do see mithrax but without seeing the claws it is tough.

 

[Betta132]

Can you lure him out with food? He's bad news either way, but he's slightly less bad news if he's an emerald. At least emeralds stay small.

 

[Brian Crook]

I've been trying to find him again with no luck so far! I've had the tank running for well over a year and suddenly last night, Level 10 crab appears.

Sorry for the crap photos. I will definitely try to catch a few more of him when I see him next. Perhaps this is the reason my Chromis kept disappearing? I don't have too much experience with crabs.

 

[Calappidae]

If it's mithrax, the chances of him killing fish aren't that likely (still possible)

If it's a xanthid, he could very much be to blame.

Although fwiw chromis often just die with no explaination (besides parasites which they get VERY often, and killing each other off for some reason.)

 

[JamesHolt]

One of mine that is supposed to be a emerald, so you can compare..

 

[Brian Crook]

Thanks! I will try and track him down again with my DSLR

 

[e048]

Use a bottle trap