hitchhiker

Have a few hitchhikers, some of which I’m (oddly?) excited about, feather dusters, bristle worms, possible spaghetti worms? But have a few more than I’m needing some ID on! Clear translucent tubes, Neon orange spots on multiple areas of rock, and the green plant looking algae? Also can’t...

Hi guys. My tank has been running about 3-4 years now. I haven’t seen these worms at all really. In the past few months their population has increased rapidly. Are they bad? I’ve had a few polyps die off on my LPS, but that could be from something else. Are these things bad? What are they?

Hard, tiny things all over zoas. They come off as strings when pulled. They do not seem to move at all. Among them was a small grub like animal that was ~2mm in diameter and had a see through body. It looked like a tiny shrimp, I could see two black eyes. Wasn't able to get picture. Also, red...

Does anyone know what this thing is? Should I be worried?

Hey guys, just recently started a 5g fluval all in one.(first saltwater attempt) it’s been running for nearly a month and a half. I’ve got this torch coral that was doing great for a while then started acting weird. Just not fully extending some polyps shrinking and becoming fat and stubby. I...

Hello everyone, recently I got a candy cane coral, I haven't noticed anything unusual until today I noticed what looks like a small tentacle extending out of one of the mouths I haven’t seen never seen this before. Just wondering if anyone has experienced this… below is a link to a short YouTube...

Hey guys I found this Mantis shrimp at the bottom of my tank. Does this look like a molt to you or the shrimp itself? Thanks !

I had two of these guys hitchhike in off a tube worm shell. I think it is a sea star that is maybe missing a leg or two? So far they seem to not be causing any problems but I'm not sure if they will down the road...

Just noticed some little additions that I hadn’t seen before. Does anyone know what my little hitchhikers are and if they are dangerous? Thought maybe Asterina, not sure what the others are near my mushrooms thanks in advance for any help!

This is a whelk correct? (trap door & pattern on snout)

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.

Just dipped a new Trumpet Coral with some CoralX and found these two 'lil creatures. Any idea what they are? 1) 2a) Assuming Front part of body 2b) also, assuming this is one creature unless it's two. But this would be what I'm considering the non-front part of one creatures - almost...

I just got some new live rock from another hobbyists tank and found these worms. Anyone have any idea what they are and if they are harmful?

Good afternoon all ! I added a Coraline encrusted clam shell to my tank when I started it at the beginning of the year. Over the past few months, some feather dusters and sponges appeared - along with these colorful guys most recently (see pics). At first though I may have been lucky and got...

Hi there, Does anyone recognize what this critter is? The biggest one I've noticed is about the size of the tip of a pencil, its body is similar to the shape of a lightbulb with 8 arms when it's suspended in the water it kind of swims like a jelly fish. The image attached is how it looks when...

Picked up some Aussie rock and when unwrapped this guy shot out. Is this a bobbit. And do I need to worry about eggs? It’s about 4in long. Don’t try to bother you guys much but a bit nervous.

Hello, First time poster here. I'm having trouble identifying a hitchhiker that just showed up on my trochus snail within the past week. No new additions to the tank in a month which is part of my confusion. See attached photo but they look like white fuzzy cones. Any clue what this could be?

Looking for any input on what this glass clinger is. Not sure if it is a trail remnant or a “live” thing? Such an odd skeletal shape. It just appeared one day on the glass (three days ago) and the same day my cleaner shrimp disappeared and hasn’t come back. The glass clinger hasn’t moved at all...

So recently some weird growths have been appearing around my aquarium, sort of all over the place. They are soft, kind of porous, and an off white color, but seem to grow blue after maturing for a while. It seems the feather dusters of my aquarium find them ideal places to root into as well...

I'm 5 months in, and my little aquarium is happier than ever, with tons of biodiversity. I've got spaghetti worms, amphipods, copepods, bristle worms, and stomatellas.... And Aiptasia. The one thorn in my side lately. dang aiptasia! I've been using Aiptasia F for some time to deal with Aiptasia...

Hi all, hoping for an ID on this or these things. Hiding in my rock. I had a look through the sticky and nothing except maybe hydroids came to mind. You see it move something out of its hold and it seems to be popping out of multiple points in the rock. These were taken during the middle of the...

Hi all, I would like to share my recent (and on going) experience with indonesian life rock, for the fun. In the past I have used: Real reef rock in conjunction with dry rock that was previously live. I do noticed that coraline algae appeared quite fast (at 1 month old it started to show up)...

Hey all! I’ve noticed these small white dots floating in the top middle chamber of my Waterbox 20 sump. They seem to swim when I turn all flow off, and there is a ton of them, and also seemingly react when I shine light on them at night. They’re tiny, smaller than the tip of a pen, can see...

Hi All, I have a new reef tank (4months old. First one) I've noticed these little guys crawling around in the dark. Curious to what they are?

This thing hitchhiked in on this rock. Can anyone help me ID it?