ID ? video of invert

Newstead · 09/20/2015, 06:09 PM

Please take a look and help me ID this guy. Never comes out completely, but when I feed the goby mysis, a few legs peek out, grab a shrimp from the baster and retreat. Less than .5 inches across (the entire rock is only 3x2 inches and came from Vietnam). I have it in my QT with a ywg and an emerald crab.

Https://youtu.be/CUn2YBDhNvQ

Thanks!

Betta132 · 09/20/2015, 11:16 PM

Those aren't actually legs, they're bristleworms. Scavengers who prefer to stay at least halfway in their hidey-holes so they won't get eaten.
Despite what some people will tell you, they're good. That particular kind is basically a spiny little earthworm, and they're great scavengers. Just don't touch them- the spines will break off and stick in your fingers. As long as you don't touch them, they're perfectly harmless, and they'll help keep your tank clean by eating all of the gunk and bits of food that nothing else can reach.
They usually stay under 2" long, but if you feed your tank far too much, you'll either get five gazillion tiny bristleworms or about two dozen 4-6" ones. Even then, they're harmless, though some people don't like the look of them.
They're actually pretty good food-level detectors. If the amount of bristleworms in the tank is noticeably increasing, you're overfeeding.

Sugar Magnolia · 09/21/2015, 05:36 AM

Looks like the back legs of a crab to me.

ginpang · 09/21/2015, 09:56 AM

Chlorodiella sp ?!

Calappidae · 09/21/2015, 03:10 PM

Quote:

Originally Posted by sugar magnolia

looks like the back legs of a crab to me.

+1

Crab on a sideways angle crawling into a hole.

Sugar Magnolia · 09/21/2015, 05:14 PM

Quote:

Originally Posted by Calappidae

+1

Crab on a sideways angle crawling into a hole.

Or partially out when smelling food. These guys are nocturnal so your best chance of seeing the crab is when it ventures out of the rock in the wee hours of the morning when its out scavenging for food.

Newstead · 09/22/2015, 06:40 AM

Thanks for all the help. I had decided crab as well, but in the video since I can enlarge it the body appears small, round and almost a fuzzy black. On another forum someone suggested a type of sea spider. Going to see if I can get a pic or video of him during the night if I can catch him out!

Shawn O · 09/24/2015, 01:08 PM

Leg's move like a spider's. Can you take a better, more stable video?

Newstead · 09/25/2015, 04:42 PM

I will try - the legs comes out maybe once every other day, I feed him a mysis shrimp or pellet and he is gone!

Shawn O · 09/26/2015, 07:54 AM

You could try tying a larger piece of shrimp to a rock with fishing line and place it so that the thing needs to come out farther to get it.

Newstead · 09/27/2015, 05:48 AM

Good idea ... I may try putting his shrimp a little farther from his hole each day. He didn't come out for two days but last night when I was feeding the goby and crab, here came 4 arms for his meal ;-)

MJV0103 · 09/27/2015, 06:25 PM

That's kind of creepy

Newstead · 09/28/2015, 02:23 PM

It almost is ... but each arm is only 1/4 inch long.... if they start getting realllllly long I am going to be worried ;-)

Newstead · 10/03/2015, 09:16 AM

Finally solved the "mystery" - it is a crab. Weird little guy - never comes out of the 3x2 inch rock except for a mysis. Attaching pics and the url for a video I finally grabbed - sorry about the Price is Right background noise and the few seconds of blur at beginning.

Https://youtu.be/4fl3gnne7BE

Sugar Magnolia · 10/03/2015, 11:34 AM

With those sharp claws it'll definitely be a problem in the future.

Newstead · 10/03/2015, 12:30 PM

That is what I am afraid of - and of course I feel responsible for it. It is still tiny and stays in its little rock, but I am going to have to figure out something in the future.

Betta132 · 10/03/2015, 10:13 PM

Do you have a sump or refugium it could live in?

jraker · 10/04/2015, 06:50 PM

throw it in a refugium if you have one. it will be a problem when it gets to be 2 inches long.

Shawn O · 10/05/2015, 11:26 AM

I like it, it's different.

Newstead · 10/05/2015, 11:47 AM

Unfortunately, I don't have a sump, and Shawn, I like it too! This is in what was my QT, a Fluval Spec 5. I bought the piece of live rock with 8 to 9 blue mushrooms on it, but there were so many hitchhikers in it I fragged 4 mushrooms off of it finally for my biocube 29 and left the rock in the fluval. In the 6 weeks I have had it have seen a o. Clam come out, and slowly make his way to the larger rock in the tank, plus micro feather dusters, pink foraminiferan, sponges, etc. Then I purchased a ywg for the biocube and my female clown pitched a fit and kept chasing it, so it went back to the QT. Next step, and the fatal one, we are talking about getting a large tank (husband wants 125 gal, the maintenance lady -me- says 65). So this guy will probably live in the sump there as long as he behaves himself for now. Hoping feeding him will keep him civil for a whike? His rock and the goby's rock are on opposite ends of the tank and so far he has never ventured out of his rock, even at night.

Shawn O · 10/05/2015, 11:51 AM

I'm with the hubby. Bigger is better.

I like the unusual critters, would someday like to get a Gaudy Clown Crab. Good luck with yours, it's definitely interesting.

09/20/2015, 06:09 PM	#1
Newstead Registered Member Join Date: Aug 2015 Posts: 80	ID ? video of invert Please take a look and help me ID this guy. Never comes out completely, but when I feed the goby mysis, a few legs peek out, grab a shrimp from the baster and retreat. Less than .5 inches across (the entire rock is only 3x2 inches and came from Vietnam). I have it in my QT with a ywg and an emerald crab. Https://youtu.be/CUn2YBDhNvQ Thanks! Last edited by Newstead; 09/20/2015 at 07:06 PM.

09/20/2015, 11:16 PM	#2
Betta132 Registered Member Join Date: Jan 2014 Posts: 2,239	Those aren't actually legs, they're bristleworms. Scavengers who prefer to stay at least halfway in their hidey-holes so they won't get eaten. Despite what some people will tell you, they're good. That particular kind is basically a spiny little earthworm, and they're great scavengers. Just don't touch them- the spines will break off and stick in your fingers. As long as you don't touch them, they're perfectly harmless, and they'll help keep your tank clean by eating all of the gunk and bits of food that nothing else can reach. They usually stay under 2" long, but if you feed your tank far too much, you'll either get five gazillion tiny bristleworms or about two dozen 4-6" ones. Even then, they're harmless, though some people don't like the look of them. They're actually pretty good food-level detectors. If the amount of bristleworms in the tank is noticeably increasing, you're overfeeding. __________________ When you put an animal of any kind in a situation where it can no longer fend for itself, such as an aquarium, it's your job to care for it to the best of your ability. It's that simple.

09/21/2015, 05:36 AM	#3
Sugar Magnolia Registered Member Join Date: Feb 2003 Location: Northern VA Posts: 17,691	Looks like the back legs of a crab to me. __________________ Adrienne The only thing to fear is fear itself....and spiders.

09/24/2015, 01:08 PM	#8
Shawn O Registered Member Join Date: May 2014 Location: People's Communist Republic of Massachusetts Posts: 1,474	Leg's move like a spider's. Can you take a better, more stable video? __________________ "55gal glass box full of water, rocks and some not-so-amused little fishes" 2x Occellaris, 1 Pajama, 1 Neon Dottyback. Current Tank Info: 55gal tank, sumpless, ReefOctopus Classic 90, Twin bulb T5.

09/26/2015, 07:54 AM	#10
Shawn O Registered Member Join Date: May 2014 Location: People's Communist Republic of Massachusetts Posts: 1,474	You could try tying a larger piece of shrimp to a rock with fishing line and place it so that the thing needs to come out farther to get it. __________________ "55gal glass box full of water, rocks and some not-so-amused little fishes" 2x Occellaris, 1 Pajama, 1 Neon Dottyback. Current Tank Info: 55gal tank, sumpless, ReefOctopus Classic 90, Twin bulb T5.

09/21/2015, 09:56 AM	#4
ginpang Registered Member Join Date: Jul 2015 Posts: 612	Chlorodiella sp ?!

09/22/2015, 06:40 AM	#7
Newstead Registered Member Join Date: Aug 2015 Posts: 80	Thanks for all the help. I had decided crab as well, but in the video since I can enlarge it the body appears small, round and almost a fuzzy black. On another forum someone suggested a type of sea spider. Going to see if I can get a pic or video of him during the night if I can catch him out!

09/25/2015, 04:42 PM	#9
Newstead Registered Member Join Date: Aug 2015 Posts: 80	I will try - the legs comes out maybe once every other day, I feed him a mysis shrimp or pellet and he is gone!

09/27/2015, 05:48 AM	#11
Newstead Registered Member Join Date: Aug 2015 Posts: 80	Good idea ... I may try putting his shrimp a little farther from his hole each day. He didn't come out for two days but last night when I was feeding the goby and crab, here came 4 arms for his meal ;-)

09/27/2015, 06:25 PM	#12
MJV0103 Registered Member Join Date: Feb 2015 Location: DC Metro Area Posts: 228	That's kind of creepy __________________ Tank Info: 50G Tank with DIY 20G Sump/Fuge. Approx 40lbs of LF. AquaticLife T5 HO 4-Lamp Light Fixtures w/ Lunar LEDs. Bubble Magus Curve 5 Skimmer. Current Tank Info: 50G Soft Reef Setup

09/28/2015, 02:23 PM	#13
Newstead Registered Member Join Date: Aug 2015 Posts: 80	It almost is ... but each arm is only 1/4 inch long.... if they start getting realllllly long I am going to be worried ;-)

10/03/2015, 11:34 AM	#15
Sugar Magnolia Registered Member Join Date: Feb 2003 Location: Northern VA Posts: 17,691	With those sharp claws it'll definitely be a problem in the future. __________________ Adrienne The only thing to fear is fear itself....and spiders.

10/03/2015, 12:30 PM	#16
Newstead Registered Member Join Date: Aug 2015 Posts: 80	That is what I am afraid of - and of course I feel responsible for it. It is still tiny and stays in its little rock, but I am going to have to figure out something in the future.

10/03/2015, 10:13 PM	#17
Betta132 Registered Member Join Date: Jan 2014 Posts: 2,239	Do you have a sump or refugium it could live in? __________________ When you put an animal of any kind in a situation where it can no longer fend for itself, such as an aquarium, it's your job to care for it to the best of your ability. It's that simple.

10/04/2015, 06:50 PM	#18
jraker Registered Member Join Date: Aug 2015 Posts: 1,421	throw it in a refugium if you have one. it will be a problem when it gets to be 2 inches long.

10/05/2015, 11:26 AM	#19
Shawn O Registered Member Join Date: May 2014 Location: People's Communist Republic of Massachusetts Posts: 1,474	I like it, it's different. __________________ "55gal glass box full of water, rocks and some not-so-amused little fishes" 2x Occellaris, 1 Pajama, 1 Neon Dottyback. Current Tank Info: 55gal tank, sumpless, ReefOctopus Classic 90, Twin bulb T5.

10/05/2015, 11:47 AM	#20
Newstead Registered Member Join Date: Aug 2015 Posts: 80	Unfortunately, I don't have a sump, and Shawn, I like it too! This is in what was my QT, a Fluval Spec 5. I bought the piece of live rock with 8 to 9 blue mushrooms on it, but there were so many hitchhikers in it I fragged 4 mushrooms off of it finally for my biocube 29 and left the rock in the fluval. In the 6 weeks I have had it have seen a o. Clam come out, and slowly make his way to the larger rock in the tank, plus micro feather dusters, pink foraminiferan, sponges, etc. Then I purchased a ywg for the biocube and my female clown pitched a fit and kept chasing it, so it went back to the QT. Next step, and the fatal one, we are talking about getting a large tank (husband wants 125 gal, the maintenance lady -me- says 65). So this guy will probably live in the sump there as long as he behaves himself for now. Hoping feeding him will keep him civil for a whike? His rock and the goby's rock are on opposite ends of the tank and so far he has never ventured out of his rock, even at night.

10/05/2015, 11:51 AM	#21
Shawn O Registered Member Join Date: May 2014 Location: People's Communist Republic of Massachusetts Posts: 1,474	I'm with the hubby. Bigger is better. I like the unusual critters, would someday like to get a Gaudy Clown Crab. Good luck with yours, it's definitely interesting. __________________ "55gal glass box full of water, rocks and some not-so-amused little fishes" 2x Occellaris, 1 Pajama, 1 Neon Dottyback. Current Tank Info: 55gal tank, sumpless, ReefOctopus Classic 90, Twin bulb T5.