hitch hiker id

. White object under my rock fluffy looking

Hi everyone I am new here and tried to find a picture of this hitchhiker that came in on one of the corals I currently got but could not find anything. It looks like a baby tuxedo urchin? But I thought I would ask to see if anyone here knew for sure just go be safe. Not sure if it’s good or bad.

Hey everyone, Looking to see if anyone has a clue of what this might be. I have quite a few on different rocks in my tank. I’ve researched as much as I could and found nothing. Thanks!

Algae problem causes me to suffer after past 6 months and finally found out is my light is too long after chit chatting with in a fish shop. Anyway, recently the tank suddenly appeared many kinds of hitchhikers: a kind of algae,Vermetid Snail, one or two fireworms (At least looks like, it has...

Trying to figure out what this is. I thinks it's a feather worm of some sort but can't find anything online that looks and moves like this

Can someone identify what coral is growing right under the leather? It looks like Xenia. If thats what it is, I need to figure out a way to get rid of it. It showed up on the base of this coral that I got.

I got these Fuzzy white polyp-like inverts that has started to grow on my reef rock They kinda look like hydroids or miniture soft corals Just want to comfirm if they may be anything bad or i should just leave it

Purchased some live rock from KP aquatics about 3 weeks ago and was trying to spot and catch a possible gorilla crab but I found this instead. I think it is a fire worm but not sure as it could maybe be a bristle worm too. Anyone have any ideas? Sorry for the loud noise in the video it is the...

I found these in the shells I got from my lfs. I’m not sure if there are more in my fish tank. I found three. Should I be worried?

Hello Everyone, So I am currently concerned but not too concerned about these weird pests that I have found living on my Zoa Coral. I am not sure exactly what they are but I would like to figure that out sooner then later. This way I can take care of it if needed. So far from what I have...

I found this growing on my green star polyps. Need help

I've noticed alot of these small red sea slugs all over my tank recently (they look yellow under the microscope, red to my eyes) anyone know what they are? I've attached pictures taken under 50x magnification any input would be great! Thank you!

Hello, I recently started noticing 2 small white centipede like “bugs” on the glass of my tank. They have antennaes, many “feet” like a centipede, move slowly, and are completely white. The bugs are very small but still bigger than pods. My tank has been fallow for 8 weeks now following a...

I currently have this mussel looking thing growing in the glass of my tank. I’ve never had anyone before. Is this safe to leave in my tank? Will it become invasive?

Hey all can you tell me mayhaps what these are? I hope harmless little filter feeders. They retract when annoyed. Thanks!! OneMerissa

I found my six line wrasse and green chromis MIA a month ago, and yesterday night I found this thing in my living rock, its a kick in my balls to get it out (no fish so I used the brute way:freshwater bathed the living rock for around 3-4 mintues).looks kinda like gorilla crab,this crab is...

ID what’s living inside the Acantho and how I can get rid of it. Bivalve clam? Burrowing clam? Is it a worm? how do I get rid of it.

This hitchhiker has two tentacles which some of them may be stripped,and a few of them grows somehow big (2cm long I guess?).In past I ounly found them on living rocks,recently they appear on my dead rocks too.I think this creature should have a pair of tentacles since I always see two of them...

I found this in my aquarium i while ago I was told it is a porcelain but if so what type? Doesn’t look like an I have ever seen before it’s an almost brown color with two front claws but also the feathers that it uses to filter feed. I have a much better photo and or video I think that I will...

Hi! Could someone please help me identify what this is? It’s in my sisters tank and I’m stumped! TIA

Found a snail with this on him. Can anyone tell me what this might be?

I need an ID on these hitchhiker corals and bacteria. I’m fairly new so I need to know whether they are reef safe and also how to exterminate if not Dark algae spots. Circular white spots all over main rock Small polyps above and around Aptasia anemone? Asterina starfish I’m waiting to...

Hi! I noticed a nasty lil worm thing moving, inching its way out of a hole in the rock. Obviously I was curious to see what the heck it was so I turned the tank light on and it shrunk back in the hole. I'm new to saltwater tank keeping so I just want to make sure this isn't a harmful parasite of...

I've got a 10 gallon frag tank that's been up and running for nearly 2 months now. Inside are just some basic softies: GSP, Eagle Eye ZoaK, Kenya Tree, and a few others. I added some new coral from my LFS a couple days ago and now this little blobish critter is cruising around my glass. I had...

Hey what’s up guys! I’m new to R2R and this is going to be my second reef tank. I bought several live rocks from the LFS at around $11 a pound and I’ve noticed several hitchhikers from Feather Dusters, Digitate Hydroids, brittle stars and I have seen a slug try to catch a ride on one of my green...