identification

Can you ID this coral? Image was taken with an orange filter under blue light.

Hey reefers, I need help identifying a coral. It’s been in my tanks for about a year now, it initially almost completely died off, the frag went from fully covered to what looked like 2 polyps that were struggling, got busy and didn’t spend much time attention to the tank over the summer and it...

This thing rolled out from under a rock. My tank has been up and running for about a year. I haven't added any additional rock , just macros about a month ago. I always check the macros before I add them to the refugium or display.

Hello all! After many years, seems my time has come... My lil buddy is sick, and by extension, I'm assuming all my fish are sick. Can anyone give me an idea if this is ich or velvet? I'm having troubles, but I think its velvet... I recently moved him (Last Friday) from one of my 50 gallons to...

bug in question, image hosting site is postimages since it came up first. this dude showed up on my GSP in a little barnacle/tube worm looking growth on sunday, noticed in the morning when I was switching lights from night to day the polyps on the GSP were all hiding, waited an hour and came...

Not really sure what to call it, almost looks like a strange coral or sponge or something. They are under only one of my rocks, one that a goby, peppermint shrimp, and pistol shrimp like to hang. I've never noticed as I usually dont shine light under the rock but was looking out of curiosity...

I found this guy hiding in my rock work tonight. I didn’t add him so I am guessing he hitched. I added a Peppermint shrimp a few weeks ago to help deal with aptasia and they don’t seem to be bothering each other. Can anyone help me identify him?

I have no clue what it is but it can see you, when you walk past the tank and it sucks back up in it’s tube.

I am in the stage of diatoms and green algae growing all over my glass. Today I was looking at my glass when I noticed a small clear area. It wasn’t near any snail trails, so it made me curious. Eventually, I spotted a small white creature which made its home in a nearby green algae clump. In...

I acquired this birdsnest coral from a friend of mine a month ago, and it has put on incredible growth so far. These pictures are from June 5th and today, July 6th. I believe it was originally from top shelf aquatics. Any ideas what variety this is? He has a huge tank and buys a lot of corals so...

They’re white, spreading, all over certain rocks and some of my snail shells. Before anyone suggests nerite egg sacs, I do not have any nerite snails. I don’t believe they are worm or snails themselves because they are flat, round, and with any orifices. I was able to break or “pop” one with my...

Hi, Could you please help me identify this species of Dinoflagellate. They seem to fade off at night and get more and more on top of the sand as the day goes by. My snails seems to go belly up and my zoas are definitely upset for the last 2 weeks since it started to get out of control. I am...

These things have been here for over 2years now when i first bought the tank. Havent seen them anywhere else in the tank.The green circle gets much brighter when lights are on.

Found a very strange snail cruising around my sandbed this morning. Can anyone help?

#fishmedic I just noticed this white spot on the top left side of my WTB tang, and I’m freaking out because I somewhat recently treated my whole tank with a 35 day hyposalinity treatment before I moved all my corals and inverts into here, but that’s no longer an option. It doesn’t look like ich...

Any idea what kind of anemone this could be? White and brown stripes on sides and a purple mouth in the center

So I got a microscope because I have been dealing with what seems to be Dino’s on my sand bed. In the video there are these things racing around SUPER fast. Are those dino? If so. What kind?

Hey everyone Curious if anyone knows what type of snail this is? The “spikes” on it are soft and retract if touched, and shell is hard. It hitchhiked into my NPS system somehow, I saw it the other day on my scleronephthya (spelling?) christmas tree coral but assumed it was new growth as it...

Hi, I’m a bit puzzled by what’s growing in my tank. I asked my LFS, they could not identify it so they suggested to post here. My tank is 3 months old but part of the live rocks I used are over 10years old from a previous tank. After about 2 months, « green things » started growing on my old...

Hi, first post for me. I have a marine betta that is just beautiful and in perfect shape, until now. His tail has a changed on the edge and it may be injury, or being nipped at. I am most concerned about missing a diagnosis if this is the start of something. It's been 2 days, second day...

Not my crab but I'm curious. From the reef tank subreddit: Pics:

Hey everyone- I'm trying to help my son ID what kind of dinos he has in his IM Lagoon 25G. Took this video today using a pretty inexpensive microscope, so not sure if it's sufficient for ID'ing. Let me know if you think you can ID from it. Thanks!

Picked a few items up from Marketplace. It came with a frag. I was in the middle of moving and with the ongoing "Unknown" , We kept it inside a container at the bottom of the refugium. It has spent a few months there. We just moved, setup the tank, and now i'm trying to figure out what to...

Hi all needing some help IDing this worm/cucumber/tunicate looking thing that came out of ocean aquacultured live rock. The larger side slowly moves and changes length (more inflated/less inflated). I haven’t seen any sort of mouth or feathers etc. Any ideas? Thanks JF