View Full Version : please id. Is it reef safe?

12/31/2010, 01:39 PM
This critter came along with my most recent coral purchase. I think it may be an emerald crab, but before I add to my tank I want to make sure it is reef safe. Will it pick at my corals or fish?


12/31/2010, 01:52 PM
Looks like a emerald crab to me too, almost exact as what is on live aquaria's website. They say it is reef safe and semi-agressive as well.

12/31/2010, 01:58 PM
i also have about 100 cortez crabs. will the emerald crab kills them? has anyone had negative experiences with these crabs?

12/31/2010, 02:04 PM
I don't think it is an emerald. Too hairy. Fly this one past the Invertebrate Forum and ask.

12/31/2010, 02:54 PM
I have one similar to this that lives in an acro. does not harm anything in my tank, but notice I say similar, may not be same

12/31/2010, 03:10 PM
Emeralds are pretty hairy too. I think you should be fine with him.

12/31/2010, 04:53 PM
doesnt look like my emerald crab. very hairy, mine has almsot no hair

12/31/2010, 06:04 PM
All of mine have really hairy legs, but no hair on the body or claw arms.

12/31/2010, 06:35 PM
better safe than sorry - toss in sump or crush it and let ur fish eat it (if u have predators) if not just kill it n throw it away.. better to not have that thing loose in ur tank and have it cause havoc.. good luck getting it out. not worht it.

12/31/2010, 06:35 PM
edit: humanely kill it

12/31/2010, 06:52 PM
mine has very hairy legs as well. I believe that it is an emerald crab

12/31/2010, 06:58 PM
If you don't want it, there is no need to kill it. I'm sure a LFS or a local reefer would be glad to take it off your hands.

12/31/2010, 07:05 PM
+1 on it being an emerald. I've had some with really hairy legs like that. They are a good part of a clean up crew. No need to kill it.

12/31/2010, 07:23 PM
Looks just like my emerald, smooth body hairy legs. I've never SEEN mine do anything bad.

12/31/2010, 07:40 PM
Gorilla Crab= Bad get it out and destroy it for fish food or trash it. End of story.

12/31/2010, 10:21 PM
Gorilla Crab= Bad get it out and destroy it for fish food or trash it. End of story.

Gorilla crabs are gray/beige in color and have black tips on the ends of their claws...their claws and body are also hairy, which the OPs crab is not.

12/31/2010, 11:01 PM
The time to get rid of it is when you can. If you want to keep it- put it into the sump and see what it grows into. I doubt it to be a emerald- could be, but can`t tell from foto.

12/31/2010, 11:12 PM
Looks like my emerald crabs. I have 8+ in my tank, they don't bother corals. They are part of my cuc.

01/01/2011, 09:29 AM
with out a clear pic you can not say for sure what type of card it is if you don't have a sump to put him in leave him out. it is not worth the chance to have it in your dt

01/01/2011, 09:41 AM
I've never seen an emerald crab that is hairy, especially like that one. Get rid of it.

And emerald crabs aren't foolproof either. I watched two different ones munch on different, yet similarly expensive montipora frags on me.