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Old 02-23-2013, 02:11 PM   #1
drwlevy
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Mantis Shrimp in my tank?


Hey guys, I've had a 38 gallon saltwater tank set up for about 7 months now, its reef and I have a bunch of fish and inverts in there. Yesterday I noticed a small hole in one of my tinier live rocks, and inside it i saw two eyes peering out at me. I believe it is a mantis shrimp but it can't be more then an inch. I must have had it for a while and nothing has gone missing, but I am worried because one of my emerald crabs likes to hang out on the rock right above this guys little hole. I took a picture but its very hard to tell, but you can see the two eyes if you look closely. Is he harmless? Any help much appreciated, thanks!
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Old 02-23-2013, 11:54 PM   #2
CDKT
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Can't tell,that pic looks like a little Darth Vader helmet lol
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Old 02-24-2013, 12:11 AM   #3
rjg716
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It definitely looks like a mantis shrimp... not only can and eventually will kill almost everything in your tank....they can really hurt you as well. They have also been known to actually break the glass (larger ones)

I would entice him out of there... catch him and bring him to a store... trade him sell him anything.... but that. Is just me

I haven't heard of a good reason to keep them yet
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Old 02-24-2013, 12:22 AM   #4
drwlevy
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Sorry the picture is bad he's very shy and in such a tiny hole that the lighting gets messed up, but heres another pic, although still not great, shows the eyes a little better. Do all of the mantis shrimp get so large or is there a chance that he may stay tiny and can be target fed and maybe ignore the other tank mates? Thanks again.
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Old 02-24-2013, 12:27 AM   #5
rjg716
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I was actually watching a show on t.v.. I guess there is like a whole crazy number of species of mantis. However I have never heard of any that stay small. With that new pic up I'm 100% sure that it is a mantis shrimp. And I would get rid of it asap
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Old 02-24-2013, 12:28 AM   #6
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I agree with rjg, get out. I had one in my first tank about a inch long. The pet store took it. All I've read and heard about them is bad.
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Old 02-24-2013, 12:29 AM   #7
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Looks like one.
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Old 02-24-2013, 12:29 AM   #8
drwlevy
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rjg716 Thanks for the reply, looks like I know how I'll be spending my Sunday; baiting and trapping! It's just a shame because the mantis is quite fascinating, I just love my inverts and fish in the tank too much to sacrifice them. Wish I had another tank I could set that guy up in. Do LFS usually have a need/desire for second hand mantis?
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Old 02-24-2013, 12:31 AM   #9
rjg716
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Now don't get me wrong. I have heard of people that keep them..... in an acrylic tank all by them selves. They pack enough Punch that a small 1.5 inch mantis shrimp can kill an 18 inch long moray. With just one strike. (Death wouldn't be immediate...internal injury would be cause)
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Old 02-24-2013, 12:32 AM   #10
drwlevy
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Quote:
Originally Posted by CDKT View Post
I agree with rjg, get out. I had one in my first tank about a inch long. The pet store took it. All I've read and heard about them is bad.
How did you trap him? Should I just take out the live rock that he's hiding in or should I try to get him out with some bait? A lot of the advice online regarding removing the mantis shrimp seems divided. Thanks again.
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Old 02-24-2013, 12:34 AM   #11
rjg716
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I know a local store by me takes them off peoples hands all the time he just got one that was about 3 inches long...... and its much easier to catch them than people think...... get a bucket with a few inches of water from your tank...... carefully!!!!!!! Don't put your hands anywhere near that shrimp.... carefully take the rock out....put it in bucket. Put lid on bucket.... good to go. If you want to keep the rock....just wait a few minutes til it comes out then
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