critter id

I need an ID! Found these guys just now (lights are off). They were floating / swimming around in a 160 gallon. I only saw these… 1 black / white and 5 red pinkish / white.

These things have been slowly growing and spreading for a little while now. Any help identifying would be much appreciated.

Hey guys, i just found those 3 guys that i’ve never seen before. It’s been at least 3 months that nothing went in the tank because i was busy with school and my time for tank went south. First 2 pics are, same guy, different angle (i think limpet). Middle 3 pics are, same guys different angle...

Can anyone help me ID this crab and is it coral safe? I noticed my zoas have been looking poor and dissapearing and not sure if this guy is to blame. Video is attached along with some photos. cheers

I decided to turn a flashlight on the reef last night and check out the rocks. I noticed this guy a week ago and thought it was algae but when I went to get a flashlight he was gone. This tank was started with large amount of live rock back in April. Any idea if I should remove him or leave...

Hello I found this little bug / insect thing I’m my saltwater tank. There are also much smaller white ones in the tank and it looks like its offspring. Anybody know what this is?

Hi I am new to the hobby and a lot of tiny white worm-like creatures appeared eating algae in my tank. Please let me know if you know what they are and if I should worry. I was thinking to add a six-line wrasse some weeks ago (but decided against it because all the post saying it goes crazy...

I have seen this stuff before (I think on a dying hammer, but never figured out what it is. what is this bubbly white ring-y stuff? I tried blowing it off in a dip & this didn’t work.

Could anyone ID these thread like worms? They have a white body with an almost cream colored head. I have a couple pictures and i can get more if needed.

Hello, I need help on an Id of this critter. at first it looked like a nudibranch when I saw it posted up on top of my rockwork. after fishing it out of the tank I can now tell that it has a bunch of long streamers coming off of it. Sorry about the doo doo iPhone pictures.

Any clue as to what this is?

Hello, we got an aquacultured coral several months ago. We dipped and scrubbed it and tried to remove any pests. However we have found these structures growing on the bottom of the mount, it has spread to around the mount. They seem to be light sensitive and will get larger at night time, and...

Hello guys, I noticed some small orange dots on my rock. It’s extremely small ( portion of a breadcrum) and it moves, I notice it on different spots every night ( I only see it in the evening due to my light cycle, as you can really only notice it under a fully blue light due to fluorescence)...

Late at night if I focus my vision on a single rock I’ll eventually notice these little critters. They kind of look like little bugs. Any clue as to what they are? Are they an issue or just beneficial biodiversity to the system? https://youtube.com/shorts/RLRCAgm4sjw?feature=share

Howdy everybody, I was up late and decided to flash the ol flashlight on my aquarium to see who was working the Night Shift and I saw this little guy flash by me. It’s a tiny transparent shrimp. Can anyone ID the little fella? As a bonus assignment there is also another random critter he...

Hi all, need help identifying this nocturnal seemingly filter feeding crab.

I got 20 pounds of live rock that came with a ton of cool mushrooms and I put it in my qt this morning when it was still dark I saw this caterpillar looking creature that is red with white spots and horns I've looked for hours what it could be but I haven't matched a picture yet can you help...

Hi all, a few days ago i noticed some weird bumps on my torch coral skeleton… i thought nothing of it until the emerald crab i tossed in (who likes to hang out under said torch) has what looks like it on his carapace as well… i cant tell if it’s spreading on the torch skeleton itself. i spent...

I just noticed this orange glow under the night lights of my aquarium. It’s extremely difficult to get a good picture of it under any lighting. It is located at the bottom of a base rock. it has orange polka dots around a dark middle part. It doesn’t move at all either. Super curious as to what...

Over 3 months in and I’m still finding unknown critters at night. I need help identifying this crab. I’ve never seen a crab like this with such long antennae. It is really little and only comes out at night. P.S. I apologize for the shaky camera work. I had a flashlight in one hand and the...

Hey y'all! Woke up to a bunch of these white, oval-shaped critters on the glass. I'm not sure if they're copepods, as I have copepods in the tank and they look nothing like them. They're not snail eggs, as these critters do move. In the attached picture, the blue critter is what I think is a...

Hey guys, I have got hundreds of these little critters on my tanks glass. I have no clue what they are. Please assist.

I have all of a sudden noticed a large amount of white critters on my rock where there’s algae and on my glass when the lights have gone out. I’ve dossed copepods before however they never looked like this ... Any ideas many thanks. please see images below tried to get best images in...