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Old 10-24-2004, 11:04 AM   #11
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Well, emerald crabs that I have seen do not have black claws with white tips. Are the claws cup shaped? Or are they shaped like scissors? Hard to tell from the pick.
Ya, the rolling around threw me off to.
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Old 10-24-2004, 11:56 AM   #12
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2 of the crabs have lighter claws while 2 have very dark green ones. The very tips are white and flat pads. They haven't rolled around on the sand yet today but they still seem pretty lethargic. Thanks for all the help.
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Old 10-24-2004, 02:57 PM   #13
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Mine had the dark claws with white tips, too. Reading about emeralds, I learned that there are several different species sold under the generic "emerald" name--some of the variations we're talking about might be due to that?
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Old 10-25-2004, 08:28 PM   #14
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All but one of the crabs is now missing, its a big tank and since it sits in the corner I only have 2 views. The one I can see still moves and eats from time to time. I took a sample of water to the LFS the other day, Ammonia 0, Nitrite 0, Nitrate 20. I read inverts normally molt when added to a tank, is it possible this is whats going on? Do inverts normally slow down and find somewhere to hide in anticipation for a molt or is more spur of the moment?
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Old 10-25-2004, 08:31 PM   #15
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Emerald crabs tend to hide during the day and forage at night. If you have a decent amount of rock, they have plenty of places to do this.
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Old 10-27-2004, 07:24 PM   #16
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Could this be a symptom that the temp is too high. I've been running the tank at around 80-81. Well going over things I noticed liveaquaria.com has Emaralds listed as preferring water 76-78.

I've started to lower the temp, I'm shooting for 78-80 and see if that makes a difference.
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