1. E

    What are these things all over my rocks?

    So I see these small white weird looking things everywhere on my rocks and it doesn’t look like aptaisia or anything to me
  2. M

    What just squirted something into my tank?

    I bought some new corals for my tank yesterday, acans, zoas and a Duncan which have all settled in nicely. Only when I looked at one of the rocks today i noticed that there was a small object shooting out bursts of a white substance into the tank. I’ve never seen anything like it and naturally...
  3. R

    Need ID please

    Found this one on one of the suction cups that hold the heater probe. Unsure if you guys can see the glass but its the only glass wall that has the spots on it.
  4. Alyssa.Weber

    What are these white dots?

    These little white balls just appeared in my tank I noticed them this morning. Anyone know what they could be?
  5. W

    Hitchhiker on an Acan Frag

    Looks like some sort of a pod but its huge? Roughly 5mm body and a couple more with the antlers. When its swimming about its straight like a stick and then when i hit it with some flow it curls up into a c-shaped ball. One of the good guys? Can I throw it into the fuge?
  6. Reefer37

    What is This Green Thing Growing on Rock Near Mushroom?

    So I'm not entirely convinced this is even a critter or hitchhiker, I've had this ricordea in my tank for awhile now and haven't added anything new in over a month. Found this random green growth on the rock my mushroom is on. It almost looks like a coral forming? I have no idea. Anybody have...
  7. andrewkg

    What’s this living on hermit shell

    Seems like some kind of mollusk that opens, any ideas? Check video something Black looks like tongue comes out
  8. ConorE

    Very small worm type creature? / tenticles?

    Hi Guys I've just been watching my tank and noticed a ball of what looks like poop being dragged across the sand bed. Closer inspection and it looks like it is being dragged by a tentacle of sorts, or perhaps a worm? I'm trying to upload a video to show you so hopefully it uploads! :)
  9. andrewkg

    What is this? // Does it need to be removed? Weird worm

    Some kind of worm coming out of this tube, thought was peanut worm orig in store and we tried to remove it. No idea what this is
  10. Beng2003

    Can anyone ID this critter

    Hello. After my new tank had an ick outbreak at the end of April, I started my fish less cycle. As I looked more closely in my tank a couple days ago I noticed this guys wandering my rocks. As I’m new to the saltwater hobby, and just had my outbreak, I’m a little superstitious worrying that he...
  11. R

    Unknown pest

    Can anyone tell me what this pest is, and if it is a threat to my reef. It’s a very small white/ or translucent oval shaped pest. I’m seeing them on my glass as well as coral and live rock.
  12. C

    What is this on my zoa?

    Need help with I'd on this little guy.
  13. Wednesday99

    What is this?

    Is this a baby feather duster?
  14. Accidentalreefers

    Feather duster worm under mushroom cap

    So I have a mushroom with a feather duster worm almost underneath it, it currently split in two halves and I have a feeling it may have been irritated by the feather worm, I have another mushroom on the other side that is doing extreamly well that also has a duster worm underneath it but its...
  15. Carebearsss.x

    No Freaking Idea What These Are!!!

    Please help!!! My boyfriend and I have just spotted these tiny tiny white spots in our tank! They kinda look like worms? THEY. ARE. EVERYWHERE. Can anybody try and identify these things?? *the picture isn’t the best quality, i apologize for that * Also, excuse the algae! *any tips on...
  16. Wednesday99

    Critter ID

    Hello! I’m completely new to having a saltwater tank and I’m trying to learn as much as possible. The other day I got a feather duster (been in my tank for 3 days) and today I saw this little guy crawling on him. Looks like a really tiny snail but I’m not sure.
  17. P

    New Critter - not sure how to google

    Hi, i found this critter in my tank about a week ago and they disappeared and i found them again. Is it good or bad to have them in the tank?
  18. BabyShark

    Black bugs in tank?

    Recently discovered these black critters crawling in my tank. At first I only noticed a few, but tonight I decided to check on my tank hours after lights out and noticed a lot of them crawling all over the rocks and on some coral as well. It’s hard to take a picture so I attached a video link...
  19. NYCMikeM3

    Can anyone pls help: ID’ing small white critter building hard spiral tube on rocks

    Hi does anyone have an ideas as to what this is? The two antennae are actually part of the critter itself, whereas the rest of the spiral-structure is the “home” it builds (which is quite hard / like a shell — about 1cm diameter). obv my first concern is whether they’re harmful or just...
  20. Nate_Krohn

    Hundreds of baby snails.. urchin and a starfish?

    I woke up at about 2 am to enjoy my tank when the lights go off and there are hundreds of baby snails on the rocks and on the glass.. I also saw what looked like a baby urchin and some type of starfish. Can anyone help ID them?? I posted some pics. They’re not the best because they’re at night.
  21. O

    Mystery Orange Growth

    I have a mysterious orange growth that looks like spaghetti noodles growing on my Chateo.. I removed it once a few weeks ago and now it has appeared again, I am struggling to find any information on this. TIA to anyone who can identify!
  22. T

    Id please!

    Never seen this thing. Should I remove it?

    Worm Identification

    Please see attached video of a small (what looks to be) worm. If anyone has an idea of what this is I would greatly appreciate it. It was moving slow until I took some tongs to get it off and it moved VERY rapidly into the rock. It is about 1/2 inch long at most (very small). Thanks for...
  24. BoSalman

    BUGS! What in the world!

    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...
  25. BoSalman

    Tube worm?

    Hello everyone, I just noticed this thing when i was looking around at night. It reacted super quickly to the light and i thought it "popped" as it just disappeared to a tiny hole in the rock... Had to point my camera on video and finally it emerged again.. hopefully those video screenshots...