critter id

Hello! I run a 5 gallon PICO tank that until yesterday had no fish. I also feed phyto daily, so there has always been an abundance of wee beasties that have fascinated me. Most I've been able to identify (copepods, amphipods, munnid isopods, spinoid worms, spirorbid worms). However, there have...

Hi all, can anyone help me identify this white mass in my GSP? I noticed two of the masses have holes in them.

So, I noticed these kinds of white bulbs popping up a bit back and I took a closer look at it this evening and noticed it's starting to develop neon green. I like to let my tank go all natural and really thought nothing of it when it first started appearing. Now, I'm curious about what it is or...

Hey guys! My friend found this weird critter in their tank and we have no idea what to ID it as. Looks like some type of worm. Unfortunately there’s no pics of it in the water but I’ll attach a couple of pictures from outside of the tank. The spikes along it move almost like an urchins spikes.

I noticed in on my rocks. I have no idea what it is. I have 2 clowns, cerith snails, nassarius snails, 2 scarlet hermits, 2 blue dwarf hermits, and an emerald crab.

I noticed this strange pattern of stuff on my rocks. I have no idea what it is. I have 2 clowns, an emerald crab, 2 Scarlett hermits, 2 blue dwarf hermits, cerith snails, and a nassarius snail l.

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...