Pix & ID: Critters that come in your rocks: the good and the bad. - Page 220

drodge · 07/19/2016, 08:53 AM

Is there are rule of thumb for the number of bristle worms? I'm new to the marine world and got a used tank that came with rock that sat out of the water for some time. After setting up the tank and letting it run for a while, I noticed the worms. I added a piece of shrimp one day, and dozens and dozens of them quickly emerged and attacked it. I was pretty alarmed at the site and my first instinct was to get rid of them. I read more about their beneficial effects and decided to try to keep them. Now I wonder how many I should have. So far I'm going on the advice that if there isn't enough for them to eat they will naturally die off to a level the tank can sustain. Are there dangers in having too many? So far everything seems very happy.

lifeoffaith · 07/19/2016, 09:00 AM

Looks like sponges to me.

Cabarles · 07/21/2016, 01:17 AM

Mmm, let's add that if you have softies, they can be a problem...or at least that there is a species of asterina that is predatory. It would be hard for one of these to transit through a pump to the DT, but it could happen.
Mine occasionally leave a brighter pink track across my coralline. That's all. And there aren't many.

CANanoReef · 07/21/2016, 10:39 AM

https://postimg.org/image/5qeltdegx/
https://postimg.org/image/6lcjkg453/

Can someone ID this critter that is floating around in my sump area with no flow?

It has multiple arms/tentacles (+20) that are stretch out an retract. I noticed that it has split into multiple smaller ones since I've taken these photos. I want to ID just incase they are harmful for my tank.

Sugar Magnolia · 07/21/2016, 11:33 AM

Harmless terebellid worm. Grab it and place it into your tank.

randr · 07/21/2016, 04:23 PM

Help identifying this guy

Nic33 · 07/21/2016, 04:33 PM

New tank with LR and new to the hobby so no idea what these things are. Already found some aptasia that I removed by just pulling the whole rock. Now I have this. Looks like multiple striped tentacles. Also, what type of plant is that green grass like thing? 8 stranded star shape. Image1469140329.790241.jpg

Sent from my iPhone using Tapatalk

randr · 07/21/2016, 04:42 PM

Help identifying this crab

seahorsedreams · 07/21/2016, 11:31 PM

That's a scaleworm.

Quote:

Originally Posted by BeeJan

I found this guy in one of my rocks last night. Is he some sort of bristle worm?
Sorry for the bad pic.

Sent from my iPhone using Tapatalk

BeeJan · 07/21/2016, 11:38 PM

Quote:

Originally Posted by seahorsedreams

That's a scaleworm.

Thanks!

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MikeDee · 07/23/2016, 06:25 PM

Hello, 2 months into my first saltwater tank. Newly acquired rock is covered in tiny feather dusters. This blue thing popped up today. Should I be worried?

Sugar Magnolia · 07/23/2016, 07:15 PM

Can you get a clearer pic?

MikeDee · 07/23/2016, 08:08 PM

...

MikeDee · 07/23/2016, 08:09 PM

....

TempestGod · 07/26/2016, 03:35 PM

This thing came attacked to the base of a leather coral I bought. And ID would be great. Sadly I am at work right now so I wont be able to provide any more pictures at the moment.

http://imgur.com/a/L5sNg

Ron Reefman · 07/27/2016, 05:30 AM

Aiptasia! An invasive anemone that can spread throughout your aquarium and can sting and injure corals. Get it out ASAP. You can do a search here for aiptasia or google it and you'll find tons of info.

TempestGod · 07/27/2016, 04:21 PM

Quote:

Originally Posted by Ron Reefman

Aiptasia! An invasive anemone that can spread throughout your aquarium and can sting and injure corals. Get it out ASAP. You can do a search here for aiptasia or google it and you'll find tons of info.

Awesome, thanks for the info! I will make sure to remove it when i get home. Ill do a bit more research and be on the lookout for more.

New20GallonNano · 07/27/2016, 09:03 PM

Hello everybody. Looking for some help. I started my 20 gallon Nano about a year ago. I have not seen any posts or pictures that look like this thing that has shown up recently. Has anybody seen this before? It started appearing from time to time on my live rock, then disappeared for a while and now has shown up on my glass in this long serpentine form.

IMG_0199.jpg

Happyschneider · 07/28/2016, 12:31 AM

Quote:

Originally Posted by New20GallonNano

Hello everybody. Looking for some help. I started my 20 gallon Nano about a year ago. I have not seen any posts or pictures that look like this thing that has shown up recently. Has anybody seen this before? It started appearing from time to time on my live rock, then disappeared for a while and now has shown up on my glass in this long serpentine form.

Attachment 355203

Snail eggs. Nothing to worry about.

Shawn O · 07/28/2016, 08:38 AM

Pic 1 is of a little type of feather duster, harmless. Wondering if anyone knows how to transplant them to a new, sterile tank.

Pic 2 is of a type of sponge. Wondering of it's a tiny barrel sponge, as it has a siphon looking thing. Also wondering how to transplant this to the new, sterile tank.

I'm going to be nuking my old rock, replacing my sand and sanitizing my skimmer and powerheads when I switch out my tank for a drilled one. I can't take the pest anemones any more and figure it's the best time to get rid of them. I'd like to reintroduce some of the harmless stuff like the sponges, dusters and micro brittle-stars but can't think of a way to do it without killing the things while doing so. Any help would be appreciated.

Johnseye · 08/02/2016, 08:55 PM

Anyone know what this white worm is? I have a few on my glass.

Lrfox · 08/02/2016, 09:09 PM

Quote:

Originally Posted by Johnseye

Anyone know what this white worm is? I have a few on my glass.

Snail eggs, it looks like.

Johnseye · 08/02/2016, 09:31 PM

Quote:

Originally Posted by Lrfox

Snail eggs, it looks like.

No kidding? Good thing then I guess.

NS Mike D · 08/06/2016, 03:25 PM

friend or foe, the green translucent tube colony growing on the rock between two frags. Hopefully, there is a clear enough section of the photo to id this:

Ron Reefman · 08/06/2016, 05:08 PM

Quote:

Originally Posted by NS Mike D

friend or foe, the green translucent tube colony growing on the rock between two frags. Hopefully, there is a clear enough section of the photo to id this:

I'm pretty sure it's a sponge, and it's OK to keep. Odds are it won't want to grow out into the light too much.

07/21/2016, 10:39 AM	#5479
CANanoReef Registered Member Join Date: Jul 2016 Posts: 1	tentacle critter https://postimg.org/image/5qeltdegx/ https://postimg.org/image/6lcjkg453/ Can someone ID this critter that is floating around in my sump area with no flow? It has multiple arms/tentacles (+20) that are stretch out an retract. I noticed that it has split into multiple smaller ones since I've taken these photos. I want to ID just incase they are harmful for my tank. Last edited by CANanoReef; 07/21/2016 at 10:50 AM.

07/21/2016, 11:33 AM	#5480
Sugar Magnolia Registered Member Join Date: Feb 2003 Location: Northern VA Posts: 17,691	Harmless terebellid worm. Grab it and place it into your tank. __________________ Adrienne The only thing to fear is fear itself....and spiders.

07/23/2016, 07:15 PM	#5487
Sugar Magnolia Registered Member Join Date: Feb 2003 Location: Northern VA Posts: 17,691	Can you get a clearer pic? __________________ Adrienne The only thing to fear is fear itself....and spiders.

07/26/2016, 03:35 PM	#5490
TempestGod Registered Member Join Date: Apr 2016 Posts: 27	Help! This thing came attacked to the base of a leather coral I bought. And ID would be great. Sadly I am at work right now so I wont be able to provide any more pictures at the moment. http://imgur.com/a/L5sNg

07/27/2016, 05:30 AM	#5491
Ron Reefman Registered Member Join Date: Jul 2009 Location: Cape Coral, FL Posts: 10,431	Aiptasia! An invasive anemone that can spread throughout your aquarium and can sting and injure corals. Get it out ASAP. You can do a search here for aiptasia or google it and you'll find tons of info. __________________ The good thing about science is that it's true whether or not you believe in it. (Neil deGrasse Tyson) Visit my build thread http://www.reefcentral.com/forums/showthread.php?t=2593017

07/19/2016, 08:53 AM	#5476
drodge Registered Member Join Date: Jul 2016 Location: Fredericksburg, VA Posts: 11	Is there are rule of thumb for the number of bristle worms? I'm new to the marine world and got a used tank that came with rock that sat out of the water for some time. After setting up the tank and letting it run for a while, I noticed the worms. I added a piece of shrimp one day, and dozens and dozens of them quickly emerged and attacked it. I was pretty alarmed at the site and my first instinct was to get rid of them. I read more about their beneficial effects and decided to try to keep them. Now I wonder how many I should have. So far I'm going on the advice that if there isn't enough for them to eat they will naturally die off to a level the tank can sustain. Are there dangers in having too many? So far everything seems very happy.

07/19/2016, 09:00 AM	#5477
lifeoffaith Registered Member Join Date: Sep 2013 Location: Grand Rapids MI area Posts: 737	Looks like sponges to me.

07/21/2016, 01:17 AM	#5478
Cabarles Registered Member Join Date: Jul 2016 Posts: 4	Mmm, let's add that if you have softies, they can be a problem...or at least that there is a species of asterina that is predatory. It would be hard for one of these to transit through a pump to the DT, but it could happen. Mine occasionally leave a brighter pink track across my coralline. That's all. And there aren't many.

07/21/2016, 04:33 PM	#5482
Nic33 Registered Member Join Date: Feb 2016 Posts: 24	New tank with LR and new to the hobby so no idea what these things are. Already found some aptasia that I removed by just pulling the whole rock. Now I have this. Looks like multiple striped tentacles. Also, what type of plant is that green grass like thing? 8 stranded star shape. Image1469140329.790241.jpg Sent from my iPhone using Tapatalk

07/27/2016, 09:03 PM	#5493
New20GallonNano Registered Member Join Date: Jul 2016 Posts: 3	What the heck is this? Hello everybody. Looking for some help. I started my 20 gallon Nano about a year ago. I have not seen any posts or pictures that look like this thing that has shown up recently. Has anybody seen this before? It started appearing from time to time on my live rock, then disappeared for a while and now has shown up on my glass in this long serpentine form. IMG_0199.jpg

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