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View Poll Results: Has your emerald crab every hurt/killed a fish?
Yes 1 10.00%
No 9 90.00%
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Old 02-14-2006, 12:42 AM   #1
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Downside to having emerald crab?

I have a little bit of bubble algae. Whats the downsize to having an emerald crap. Will he bother my Nass/Astrea snails? I read they might bother small fish too. (I plan on having a wathman goby, firefish, and my clown).
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Old 02-14-2006, 01:17 AM   #2
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I have 3 in my 100 gallon and no problems. They are doing a good job on bubble and the green algea as well. I wouldnt get big emeralds if you get them...all of mine are small and once they get big then trade them back in for smaller ones.
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Old 02-14-2006, 02:03 AM   #3
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OK cool I will do that. Just wanted to make sure im not getting a cool critter to take care of one problem, and then create another. My mistakes learning have ended enough life as it is lol.
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Old 02-14-2006, 04:15 AM   #4
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Yeah I have 5 along with many snails, hermits, nudis, and shrimp. They dont bother anything. All they do is go back and forth with their claws from the rock to their mouth.
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Old 02-14-2006, 10:07 AM   #5
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Be sure to keep a close eye on them, especially when they get bigger. I had one take two of my fish! I finally got rid of all of them in my tank just to be safe....
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Old 02-14-2006, 01:10 PM   #6
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Yeah Ill probally trade them when they get bigger. If one kills my fish.... off with his claw!
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Old 02-14-2006, 01:19 PM   #7
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The only problem with mine is he likes to eat coraline algea.
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Old 02-15-2006, 10:27 AM   #8
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I am no expert here, but I have seen two types of emeralds, ones with very small claws and ones with larger claws. It is my uninformed opinion that the small-clawed ones would have trouble taking out a fish. I don't know whether this is a male/female difference or if it's a different species or what. I feel that these two types may be responsible for the different experiences people have with them. perhaps we should do a survey about these, since I have no research whatsoever to back up what I'm saying.
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Old 02-15-2006, 11:25 AM   #9
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Well, I had a medium-sized green emerald take a "chunk" out of a tang. He lasted only a week after that. And it was a big chunk. Some say the green ones are safer, but I think it depends on the crab--obviously, mine wasn't.
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Old 02-15-2006, 12:03 PM   #10
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i thought they were all green... hmmm...
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