PDA

View Full Version : Live rock crab needs ID please


heshamm
04/13/2008, 01:19 AM
I found this type of crab in the live rock I need help if this Crab it is keep reef Safe or good for reef tank or not good for the reef Please help me I need your help
I saw he is eating the alga in the tank.

http://reefcentral.com/gallery/data/500/113691crab_2.jpg


Thank you,

heshamm
04/13/2008, 01:23 AM
What about the hair on the legs it is normal or he is sick

thank you,

homer66
04/13/2008, 06:41 AM
These appear to be emerald mithrax crabs. Reef safe and good CUC. The hair on the legs is normal

Tylt33
04/13/2008, 09:58 AM
These are not emerald mithrax. Emerald mithrax are green, and have smaller claws. These things look like fish killers, and I would get them out ASAP.

Grey Reefer
04/13/2008, 02:39 PM
I would toss them in the sump or refugium. That or kill'em. Nearly all crabs are opportunistic feeders. So they'll eat whatever they can get their claws on including fish.

heshamm
04/14/2008, 04:50 AM
<a href=showthread.php?s=&postid=12318506#post12318506 target=_blank>Originally posted</a> by Tylt33
These are not emerald mithrax. Emerald mithrax are green, and have smaller claws. These things look like fish killers, and I would get them out ASAP.

it' was log time in thank but I did'nt see him attack on the fish

Same time i saw him near from the coral eating the alga on the coral

but in the night I don't now

fish4lyfe
04/14/2008, 08:21 PM
You can tell by its extended claw that it is a fish killer.

Tayler
04/14/2008, 08:47 PM
it looks like a xanthid crab i would definatley toss him out or put him in your sump.