hitchhicker

Hi all, I just noticed this guy floating around in my water column twitching like crazy (sort of like a fish). Finally caught him when he was caught on a vermatid snail net lol. It looks like some sort of larvae, any idea what this may be? Thanks in advance!

I just noticed these feathery like growths sprouting from the crevices of its shell and was wondering what you guys think of this?

I believe its an isopod. Cant tell if its a good thing or bad.

So I just notice about 5 or 6 of these have popped up around my tank. I’m not sure what it is but they may have hitched a ride on my clean up crew. Any ideas what it is? It’s about the size of a pee and kind of reddish with clear tentacles with green tips kinda

I passed by my tank when the lights were off and noticed these worm like things on the glass. I removed from what I can see but sure there’s plenty more. I do not know what they are or if they are harmful to my coral any information would be greatly appreciated. Thanks

Can you help me identify this random thing growing in an old shell? I have leathers, zoas, and hammers but this guy doesn't look familiar.

So came downstairs to my office where my reef tank is. Started the morning ritual of cleaning the glass with a coffee in one hand when I saw this little guy on the glass! So excited, I assume totally safe in a reef system? Anything I can do to help it out?

I'm unsure whether this might actually be a white stripped hermit because unlike the pictures I came across the bands on its legs are actually a brown colour and the shell is not as dark. However despite that the crab now lives in a 3i conch shell it does not bother anything else apart from the...

Does anyone know what these little buggers are? They are very, very tiny. This is the best photo I could do on my phone. They seem to multiplying rather quickly.

When my Torch coral closed up for the night I noticed some odd white growths. (Not the white curly worms... I don’t know their name) but I’m wondering about the larger white tube like things. Sorry for the quality my phone refused to focus on the plug. Does anyone know what these are and if they...

My LFS told me that I had an isopod in my tank based on a video I showed them. I think this is the same critter, can you tell me what this is? *IMPORTANT EDIT* and if it IS, could there be more????? Suspected isopod: Current captive:

Hi! I had an isopod scare a while back but it turned out to just be a snail. Now I’m worried I actually have them. Started with copepods, when the pods vanished a second colony + bigger “things” popped up. Then I found a 3/4inch, bright purple flat critter. Caught this video purely on accident...

Got this as a hitchhiker on some live rock about a week or so ago. It was smooth, slimy, and uniform in color and texture when I put it in my tank. It hasn't moved at all, so I assumed it was some sort of sponge and would die off during my cycle. Three days ago it started growing what looks...

Last night when I was looking at my nano tank I noticed this worm looking thing trying to swim around but it was being carried by the return’s current. I captured it and here is a picture and a video. Any idea what it is? Could it be a pod since I have seeded this tank. If not, is is harmful...

Hello, So i had this small goniopora recently which was accidentally laying on its side on the sandbed for a day or so, i fixed its position uprights and i'm keeping it so if its healthy enough it would bounce back on that small area... Normal inspection tonight on my tank to look for...

I've seen this thing a few times over the years. Pretty obvious that there is a limpet shell underneath that shroud. Anybody have experience with these things? He's been hanging out around my zoanthids a lot lately, just curious if you pose any danger other than knocking frags off plugs.

I was doing my week water change today and while i was stirring my sand bed around i happened to catch a glimpse of what i thought was a worm or maybe a piece of fish poop. I happened to catch it in a container before it was buried again in sand, and it was a worm. I don't know what kind, though...

I have an urchin that came in as a hitchhiker which might be a pin cushion urchin. She's been increasingly active lately and I'm concerned she might not be getting enough food. I offered her some Nori but she doesn't want it. I found an estimate that they can reach eight inches but the same site...

Started getting these all over glass. Any ideas?

what is tbis

We have had this mystery crab in our tank for a while now and even with traps have not been able to get him out! Sneaky guy! He has molted so hopefully this will help. He is a little fuzzy but Im pretty sure its not a gorilla crab? One claw is very large compared to the other, he has red eyes...