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unixnum1 View Drop Down
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Joined: January 08 2004
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    Posted: July 14 2006 at 10:45am
I recovered one of the Mythrax crabs from the last frag fest.
Since then, the thing has become HUGE.
(No, I couldn't get a picture, it went and hid.)
The front legs with the claws are over 2" long!
His body is 1" across and with his legs spread out I would guess he is ~3-4" wide.
It is larger than any of my other mythrax but it looks the same.

Is it a mythrax? ( I will try to get a picture)
It was picking at my Zoo's
Should I move it out of the display?


Edited by unixnum1 - July 14 2006 at 10:49am
220G with 30G sump, SPS/LPS. RoboTank Controller.
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If life is a bowl of cherry's,
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Gahlenfr View Drop Down
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Points: 1061 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gahlenfr Quote  Post ReplyReply Direct Link To This Post Posted: July 14 2006 at 1:29pm
I was reading an article yesterday by A. Calfo and it is his opinion that when the inhabitants like mythrax crabs eat anything other than their "normal" diet it is because our tanks are lacking in that/those foods.  Mine looks like it is picking at the coral but as I watch it closely it is actually picking at the algae on the corals.  Watch yours and see if this is the case.
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AnthonyH View Drop Down
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I agree several times I have thought that my Emerald crabs were picking at coral, only to realize they never did any damage and must be picking at algae on the coral.
Anthony
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unixnum1 View Drop Down
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Joined: January 08 2004
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Points: 482 		Post Options Post Options   Thanks (0) Thanks(0)   Quote unixnum1 Quote  Post ReplyReply Direct Link To This Post Posted: July 14 2006 at 3:14pm
Thanks, I was aware of that but it was actually picking off whole zoo's and stuffing them in his mouth.

My question is it really a Mythrax?
Unfortunately, I haven't found a way to identify this crab and until I can get a picture, I was curious if it struck a chord.
220G with 30G sump, SPS/LPS. RoboTank Controller.
=====================================

If life is a bowl of cherry's,
why am I always the stem?
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bbeck4x4 View Drop Down
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Joined: June 22 2005
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Points: 2378 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bbeck4x4 Quote  Post ReplyReply Direct Link To This Post Posted: July 14 2006 at 4:04pm
I feed mine some algea from the sump, I let it stick to the inlet of the closed loop for them.

sounds like it's hungry.
looks like you can feed more.
Brian
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Mark Peterson View Drop Down
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Points: 21436 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: July 16 2006 at 6:48pm
IMO&E, not all "Emerald Crabs" are the same. I would remove it. It will probably only get worse.
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unixnum1 View Drop Down
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Points: 482 		Post Options Post Options   Thanks (0) Thanks(0)   Quote unixnum1 Quote  Post ReplyReply Direct Link To This Post Posted: July 17 2006 at 11:21am
Is this a Mythrax?


I finally cornered him as he was pulling polyps off some coral.
He is now down in my sump with all of my mangroves.
Hopefully He can't damage anything down there.
But now I know why my corals were not extending and dying.

It is funny I never sam it before Thursday considering how big it is.


Edited by unixnum1 - July 17 2006 at 11:22am
220G with 30G sump, SPS/LPS. RoboTank Controller.
=====================================

If life is a bowl of cherry's,
why am I always the stem?
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