hitchhiker

Been having some algae problems in the last few weeks but got my Trochus Snail. But in the last day or so i just noticed this odd thing on the back of it. None of the other’s have it. Anyone have a good guess? And if so should i remove it?

And is it good or bad. Not trying to have something grow that night over take my tank.

Can someone please identify those small moving black dots on my Scolymia button coral? If my calculation is right, the dots are very small, ranging between 0.04 and 0.06 mm. Which should be 10 times smaller than the Black Bugs, if I'm right. For scale reference, the head has 1 inch diameter...

I have no idea what this thing is, i just noticed it on my frag, i dipped the frag before hand as i do with all drags but???? It’s creepy and I’m not sure if i should be worried. I tried to get a good picture of it but the lighting is kind of temperamental sorry.

Never seen this before. Approximately 1.5 inches from top to bottom. Any information would be appreciated

Never seen this before. Approximately 1.5 inches from top to bottom. Any information would be appreciated

Hi all, I’ve had my reef tank for about three months and yesterday I saw a pink rice size thing floating past me in the water. It looks like a piece off a torch coral tentacle for the cooor and thickness. But this morning, I noticed it has attached to my glass and Found a second one. I’ve...

Anyone have any idea?

Does anyone have an idea what this green macroalgae is? I obtained it a month ago on some LFS live rock (which I assume originated from the Indo-Pacific when wild live rock was more popular). Since then, it has doubled in size, having grown to an inch across. It is smooth, and stiff yet is very...

Recently bought this guy at a show and it’s in my q tank atm I’m not exactly sure what it is growing on them but the guy was not very forth coming so obviously was a poor choice I just haven’t been able to find out what it is thanks in advance I also can’t tell if it’s aptasia or not cause it...

Hi everyone, I’m a reasonably new reefer and was wondering what this little hitchhiker might be. I’m concerned it could be aiptasia but it has only slowly grown over a month or so and it has not reproduced to my knowledge. It also doesn’t look like aiptasia that I’ve seen. Any help would be...

I have absolutely no clue what these things are. They came on some LFS live rock, which I believe originated from the Indo-Pacific. They have no holes, feel quite tough, do not bend, and have small “tufts” on their spikes. They also do not appear to have grown since I introduced them a few weeks...

I see these stringy things coming out of the sand all the time. I believe the worm stays under the sand and puts the strings out. I saw it on the glass and tried to take some pictures. Let me know if you can identify this. Thanks

Dear reefers, I got this green star polyp 1 month ago and now notice there's a possible aptasia? Anyone can verify? thanks! Attached video below taken during light off with ambient room light, polyps all closed up.

Hey all found this in my tank last night and forgot to post it any one have any ideas?

Does anyone know what this yellow is? There’s also a wired mussel looking thing lol

Hello All, Today I took out macro algae to clean and rinse and found these guys underneath the branches. they aren't moving actively and seem attached permanently to my macro. when trying to detach, they break and "head like" part stays on macro. Either it has mouth attached to macro or it...

Hi all, I’ve had a rose BTA for nearly 3 months which came attached to a small piece of live rock. Today I noticed what looks like two aiptasia growing on the rock. I’ve had these come in on some coral frags before which I dealt with by smothering in superglue, however those were white and...

Hello! I've got a strange hitchhiker on a zoa rock I got. Noticed it this morning when I was feeding my corals some reefroids. https://photos.app.goo.gl/nzfTw5MGDEtZ4vP5A It looks like some sort of filter feeding worm, but I'm curious which type. Apologies for the poor quality video, but it's...

Can anyone ID this?

Hey guys! Any ideas what this could be attached to my little snail? Good guy? Bad guy? How to remove if bad? Thanks! Tank contains: 5 snails, 2 occy clowns and a blenny

There is no triangle head...

Ive only just noticed it today, the tank is only a couple months old. Please help identify, after browsing the web i still haven’t found anything like it haha, It’s only around an inch big and it looks like it has pores

Anyone know what this hitchhiker is? It came in on a frag from a recent live sale. It looks like a small aquatic version of a roly poly. It has a bunch of legs (10 at least?) and two very small distinguishable eyes.