worm id

I've tried to ID these guys, but I swear they look like 10 different worms when I tried comparing pictures. This is through one of those phone connected microscopes, as the worms were crawling through the sand. They're about 0.5in long, super thin, and white to the naked eye.

Is this a fancy worm or a brittle star? I see something that looks like tube feet, so maybe a star? I do not know where i got it from, i saw no stars in chaeto, this piece of rock(the only live rock i bought) or on the small rock with zoas that was gifted to me. Will it divide into more specimens?

cool video of my 1.5 year old mandarin eating some kind of worm from the rocks … what do you think it is ?

Hi, hope you all are having a nice day! I was doing my weekly maintenance on my tank and realized that there are a ton of these little worms in my tank, will attach video of them and photos. Not sure if it's normal or do I get rid of them. Appreciate your help!

Just saw this today and was wondering if anybody had an idea of what it was.

Good morning all! Rearranging a Zoa colony found this guy. Is it around 2” long. Quite cute the wanker. Is it friend or foe?

So i noticed this weird tenticle pop out of one of my rocks. Kinda looks like a bristke worm but its huge. This is the best video I could get.

Hello Reefers, I’ve noticed these red / orange worms in my tank. Seem to have hair or bristles. Can anyone identify? Good or bad? Thanks in advance.

Been trying to ID this worm on the side of a rescue coral. It is a hard shell with the mouth on the left side. I think the coral is a torch, but still recovering. The coral has white milky stuff coming off every few days.

I was watching my rock flower nems (because I keep hoping for spawning) and saw this thing, i thought it was one of my brittle starfish at first, but you can see one of the starfish legs above it so I know it's not that. Plus it moved like a worm? And like folded into itself, also it almost...

I seen these critters as I was cleaning out one of my chambers. Its was in a green ball of algae.. I don’t know if it’s a bristle worm.. I also think I’ve see these little wiggle monsters under a microscope a few weeks back but just seeing them with my own eye freaked me out. Anyone have an idea...

Hey guys So we are a good few weeks into the 20 gallon and I have 6kg of live rock tank mates are Nasarrius snail, 2 red legged hermits and a turbo snail who is doing a great job on the algae clean up. The rock is covered in copepods but I noticed a weird tentacle earlier! There was a small...

I’ve been trying to figure out why this coral is dying and the rest of my tank is fine. I’m thinking it has to be a pest or something. I just noticed this fuzzy worm playing peek-a-boo. It has a fuzzy looking body with a more compact “head”. These are the best pictures I could get. I figured...

Hello everyone! Recently was able to get some sand off the Florida coast and was planning on putting it in my current seed tank. I was wondering if these free floating worms were detritus worms? They’re not too quick and are attracted to light. Thanks!

What is this infestation? It’s contained in my sump and especially my refugium for now, but I’m afraid my display is next. I assumed flatworms, but they just look a bit different than the pics I saw online. They are also fairly firm/hard and do not squirm or move when touched. ID anyone? Good...

I have no clue. I just treated (twice) for flatworms using flatworm exit. This is long and moves fast. Doesn’t have the shape of the brown flatworms I eliminated

This guy crawled out my torch coral during a dip. Not sure what he is. Checked the guide and its not on there. Taken Coral RX 30 mins to kill it.

Last night i had a quick look round the tank with a torch and out of nowhere this 1 inch, thin, very wiggly worm followed the light. Because im having a nightmare with dinos, and torch coral mites my patience is waring thin with problems so i led it to the bottom edge and killed it with my...

Hello everyone, I recently purchased some live rock from kp-aquatics and am having some trouble identifying two hitchikers. One is an isopod that I think is Sphaeromatids but would like to get some other opinions. The third picture is the isopod curled up on its back. The other is a worm...

Apologies for the horrible picture and under blue lights. But any idea is this is a fireworm or any harmless bristleworm?

Hey everyone, I noticed something weird on my rocks and was wondering if someone can ID it for me? I’ve looked around online with no luck. I’ve had the tank for about a year and this is the first time I’ve noticed this. Thanks In advance!!

I have been setting up a small NPS tank with my Fluval Evo 13.5 and recently noticed a small red object in the sand bed. At first I thought it was just a left over piece of Gracillaria or something but I took a closer look earlier because I noticed it had moved and realized it has lots of little...

is this worm good or bad? I dip all my corals yet here he is

Hey everybody I was hoping for some help in identifying these worms in my tank. If anyone could help I would greatly appreciate it! This is the best picture I could get. The worm seems to have a white dot near its neck and a white dot on its tail.