Tiny Crab ID Please

[Steve-H]

Tank has been up for a year, wonder if I have some crab XXX going on somewhere....
Any idea as to what this little guy may be ? He's about the size of a penny. I played it safe and moved him down into the sump...As the spots on his back make be believe he's most likely from the xanthidae family.

Thanks !

 

[Flounder73]

I am interested also. Though he is no longer around I had a very similar crab in my tank who had a very deep hiding hole in my live rock.

 

[GerritM]

Looks like a Pachygrapsus sp. (maybe an P. minutus). Harmless algae eater. Thats mine:

 

[Steve-H]

Thanks Gerrit !

Glad I moved him to the sump regardless; there's more than enough algae in there for him to snack on....Plus to the best of my knowledge he's the only one down there so he'd be safer anyway.

 

[GerritM]

Yup, no problem.

That´s fine. Then he is a lucky guy.