critter id

Happy Super Bowl Sunday! I was getting through some weekend maintenance before the big game and noticed this black object embedded in some Zoas. Didn’t think much of it until I noticed it had little antennas. I’ve never seen a black worm/slug like this before. Any thoughts?

I can see one and it’s some all white thing I’m thinking it’s probably some kind of snail it has 2 long tentacles or whiskers antenna whatever they are and that’s all ik but it seems to be living inside that coral only one seems to be on the outside a little tried to get good pictures thanks guys

Just noticed this on a frag that's been in the tank for about a month. I haven't seen them anywhere else in the tank so I guess it came on the frag, but just now noticing it. Can anyone help ID what this is on the base of this hammer?

I found this critter today. I am not sure what it is. Good or bad? Should it be killed with fire? Seems like a small orange worm with small white tentacles, or hairs, on one end and pointy on the other end. I hope the pics help. Thank you for your help!

Good afternoon all, I am on the downhill side of a ********’ fight with bryopsis (fluco ftw), and noticed some tubes on some frags now that they are not covered in algae. I am reading a lot of conflicting info, so hoping someone could give me a definite ID, so I can treat accordingly if needed...

After searching for copepods that resemble the ones in my tank, I am not coming up with any results or similar matches. Does anyone recognize the order/family/genus/species of copepods in the following pictures (encircled in orange)? I am pretty sure they are some type of copepod, but not sure...

So I have this snail I purchased from the LFS. It looks for all purposes like a tropical turbo snail. Thing is, it’s only active at night and buries itself in the sand during the day like my nassarius snails. When he comes out tonight I’ll get a picture. As far as I know turbo snails don’t dig...

Found these two little ones surviving in a filter sock. I don’t want to influence the identity by telling you what is in the tank.. Thanks for looking and your help!

I bought some zoas from my LFS four days ago and one of them had these little red dots on them that I noticed after dipping them. I dipped for 30 minutes and blew water on them every 5 minutes using a pipette to try to knock off anything but these were left, I figured it would be okay since I...

I originally thought this was red bubble algae, so quarantined the coral, but I’m not so sure anymore. Looks kind of like a macro to me at this point. Thoughts?

So one of my snails has 3 opaque lumps on it which looks like has white stuff inside it. Looks like a sponge or lump of eggs or something.

Found this bright yellow worm looking thing attached to a piece of caleurpa. Two days later there a few of these yellow spots, but they all seem to be on the tips of the caleurpa. Any ideas?

I’ve noticed over the past few weeks these spores attaching to the dark and low flow areas of my tank. Specifically in the sump on the bottom portion of my skimmer and in the plumbing box up too in the DT. Should I be worried? Seem to be harmless thus far, but I’d like to get in front of it if...

Hello! I've recently had this growing in my tank and more are popping up everyday I was thinking an anemone of some sort but starting to think it isn't due to how many there are!

These little white balls just appeared in my tank I noticed them this morning. Anyone know what they could be?

Got these things hanging around the corner of my tank. Can't tell if they're hydroids or something else. Can anyone help ID?

Looks like some sort of a pod but its huge? Roughly 5mm body and a couple more with the antlers. When its swimming about its straight like a stick and then when i hit it with some flow it curls up into a c-shaped ball. One of the good guys? Can I throw it into the fuge?

Went to go feed my yellow tang and goby in my quarantine tank and I noticed these little black worms all over the PVC pipe and on the rocks does anybody know what these are? It's kind of hard to get a picture of them because they're so small but I attached some

Any ideas It's about 1/4" in diameter, very small @ReefSquad

So I'm not entirely convinced this is even a critter or hitchhiker, I've had this ricordea in my tank for awhile now and haven't added anything new in over a month. Found this random green growth on the rock my mushroom is on. It almost looks like a coral forming? I have no idea. Anybody have...

Hey all, I just finished my weekly reef roid feeding and noticed my sand bed moving. Upon closer inspection I noticed all these tan little snails with their trunks up looking for any globs of food resting on the sand. I’m not too worried about any hitchhikers in my tank as I’ve already found a...

Some kind of worm coming out of this tube, thought was peanut worm orig in store and we tried to remove it. No idea what this is

Hi all. It seems like Aiptasia looks different in the several threads I’ve been looking through. I have a 20g RSM and going through last days of cycling. Just want confirmation as to what this is. Came out of nowhere since yesterday. It’s the only one that I see. Thanks in advance for helping a...

Hi all, just dipping an Acro colony and noticed this guy deep down in there, trying to get a ID, difficult to get a clear shot! Any sure answers? At first i thought it was a decorator crab but its too chunky.

hey guys i just bought a couple of zoa colonies and noticed these tentacles tucked in between today. theres about 6 tentacles that all seem attached to one thing somehow? i just want to know if it’s harmless or not! heres a video of it moving and an image attached. thanks!