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Old 02-16-2012, 11:03 AM   #1
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killer Emerald Crab

So last week I found my Sun Burst Anthias getting eaten by my emerald crab and shrimps, but I thought he had died for other reasons,, well I left it at that and today I found my emerald crab eating my Pearly Jawfish.... Grrrr!
Should I take him back to my LFS or put him in the refugium?
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Old 02-16-2012, 12:04 PM   #2
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Refugium with a little green puffer, see who wins.
No but really, could he have caught and killed the fish? I just don't know. Any reason to think the fish may have just died?

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Old 02-16-2012, 12:16 PM   #3
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Quote:
Originally Posted by don_chuwish
Refugium with a little green puffer, see who wins.
No but really, could he have caught and killed the fish? I just don't know. Any reason to think the fish may have just died?

- D
lol...thats a good idea!
I know he was the killer, cause the fishes were just fine the day before I found the crab eating them.... I had seen him before bugging the fishes, but never thought he was ganna end up eating them..
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Old 02-16-2012, 12:22 PM   #4
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Lot of people don't realize that as emerald crabs mature, they turn from herbivorous (juvenile) to carnivorous (adult). Truth is, no emerald crab is truly reef safe long term.
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Old 02-16-2012, 12:34 PM   #5
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Yea and this crab doesn't eat just any fish... He ate two of the nicer and one of the most expensive fishes I had....GRRR! I feel like eating him myself! Lol
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Old 02-16-2012, 12:52 PM   #6
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I've always kept emerald crabs and have never seen one take down a healthy fish. On the contrary, they dart backwards when a fish swims by. I have 2 in my tank right now that are about the diameter of chicken eggs.
How long have you had these fish?
have you tested your water recently?
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Old 02-16-2012, 01:06 PM   #7
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Originally Posted by mr_X View Post
I've always kept emerald crabs and have never seen one take down a healthy fish. On the contrary, they dart backwards when a fish swims by. I have 2 in my tank right now that are about the diameter of chicken eggs.
How long have you had these fish?
have you tested your water recently?
+1 (and a bunch more letters)
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Old 02-16-2012, 01:07 PM   #8
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Originally Posted by mr_X
I've always kept emerald crabs and have never seen one take down a healthy fish. On the contrary, they dart backwards when a fish swims by. I have 2 in my tank right now that are about the diameter of chicken eggs.
How long have you had these fish?
have you tested your water recently?
All my parameters were on point. My emerald crab wouldn't back down to anything, I'd witness my Jawfish trying to get him out his cave and hi wouldn't even flinch. He didn't even move when I was trying to get the dead fishes out of the aquarium, he would try to attack me actually.... My emerald crab is evil..lol
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Old 02-16-2012, 01:13 PM   #9
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I had an opportunistic killer emerald. He waited until a shrimp or fish would hide in a cave or get stuck in a rock. He would just go to town on them. Killed a cleaner, ate my 3 peppermints while they ate leftover seaweed i would feed to my tangs. I returned him to the LFS after i had him clean up my fuge a bit.
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Old 02-16-2012, 01:16 PM   #10
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I've seen them take down healthy fish, especially at night when they were sleeping or resting either in the bottom or in holes in the rock. Bigger ones will take ornamental shrimp as well.
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