hitch hicker

Can anyone tell me what this is? It started growing on a base live rock for a cave, so it does not have much light. It doesn’t move or retract when you touch it.

... but seriously i'm not sure of what kind of Anemone i'm looking at here... any ideas? Seems to be more active at night than day. It does fully retract. It's currently on the underside of one of my florida aquacultured live rocks.

I'm trying to ID this guy (white hairy/bristlelike worm on glass) to know if I should pull it or keep it. I have new tank with florida aquacultured live rock. I'm hoping it's not a bristleworm as I know they're bad and have to go. I'd like to keep it if will be helpful stirring up the sand...

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...

So this is in a friend’s aiptasia growing tank for feeding his berghia nudis. It’s a type of finger sponge I believe. Its black in color besides the area around the opening at the top of each branch, which is white. Another interesting note is that it will cause a stinging sensation when...

Does anyone know what snail this is and if it’s considered reef save? Have it roaming around (only on the rocks) for quite a while now.

Hi, I have two different subjects that need ID-ing. First, I've been battling Amphidinium Dinoflagellates and have been dosing Silica (Brightwell's SpongExcel) to encourage diatoms. Here's the first shot. Looks to me like possibly pennate diatom. Thoughts? Second, Just recently dipped a...

Got this acan off the World Wide Corals Sale a couple weeks ago and something has just started to grow on it. No idea what this is can’t find anything on the internet. Video and photo attached.

Hey I had a couple of these show up in my quarantine frag tank after adding some Australian Live rock from unique corals. I wanted to double check that they were safe before any of that rock goes in my display. They don’t seem to have bothered any corals, but I’m still relatively new to all...

Hi all, I just picked up a feather duster and when I was cleaning the LFS sand off of its tail (lack of a better word) when I pulled three small worms off of it. Any suggestions on how to "clean" this guy? Someone needs to make an invert dip :) Also, does anyone know if the "Tail" is actually...

Hey guys so I was just going around and cleaning algae off my frags in my frag tank when I noticed a few of these guys crawling around and was wondering if anyone knows what they are.

Noticed this guy after turning lights on. It free swims but also grabs onto rocks - seems too big/fast for pods? - second half of video has much clearer image https://youtube.com/shorts/5gyCFSZWXkM?feature=share EDIT: Answer seems to be that it is a bad isopod.

This thread is for the general discussion of the classified ad Bristle Worm Trap. For more information about this item, please click the link or ask a question in this thread. Please add to the discussion here.

Hey there! I just wanted to know if this sponge is bad for my tank. I bought a colony of zoa and after 2 months that sponge appeared. Is it a good thing or bad? TIA

Found this little guy rummaging around on my zoa frag. Was able to scoop him up but wanted to see if it’s something I should be worried about? From what I’ve seen on other threads it looks like it may be a bristle worm, but not sure. Thanks!

So I got a frag of zoanthid from an lfs and this is what is on one of the polyps, can someone identify it. It’s white and has triangle shape. The one polyp that is covered at the base doesn’t open like the others.

These keep coming up on my rock. I am not sure what they are and if they are harmful to my coral? Any help would be appreciated.

https://www.reef2reef.com/threads/please-help-me-out-any-info-appreciated-very-much.895597/#post-9951997 Worst experience I’ve had in my 13/14 years of reef keeping. This has gone on for almost a full year. I recently set up a Red Sea reefer xl system and I am taking this old system down and...

I have multiple in my tank. Was curious to what they were, not the best picture but they’re pretty small.

Any idea what I’m working with here? It’s on the glass and there’s nothing similar on/near my montis. Looks almost like a berghia to me, but I’ve never had them. I’ll try and get a better photo of the top.

What is this and is it harmful? Vermetid snail? Came on some live rock From petco and on a snail.

I noticed these small snails all over my sump, filter socks, etc. I haven’t seen any in the display as of yet. I do have 2 turbo snails in my sump so I’m not sure if it’s possible they laid some eggs that hatched ? I doubt it as they seem to be really flat. I attached some pictures of one of the...

Please help. Just saw this today in a few locations. All found out of the light. Friend/foe/ neutral?