pest

Can anyone help me ID this crab and is it coral safe? I noticed my zoas have been looking poor and dissapearing and not sure if this guy is to blame. Video is attached along with some photos. cheers

I woke up today with these brown discs on one of my heads of candy cane. They appear to be moving and i just want to check what they could be and if they are pests. If so how would i go about removing them? Thanks (sorry for the dark image, lights just turned on)

Greetings fellow reefers, with great sadness my first post has to be about something so grim. I have a nanocube 40l with a mixed reef. Everything has been going fine for 2 years, I haven't added anything for a year. A few days back I started to notice STN on my Acro strawberry shortcake...

How many of you have these living in your tank, forever? Pretty amazing stuff. Who knew?

I have seen this stuff before (I think on a dying hammer, but never figured out what it is. what is this bubbly white ring-y stuff? I tried blowing it off in a dip & this didn’t work.

Hi everyone, i just encountered this while cleaning the tank. They're on a dead coral, I don't know if those are its polyps or if they are anemones. The tank is 1 year old. I started with new dry rock. The only corals I have are the ones I put in the first batch and that went through...

Hey, Recently gone on a break for a month and came back home to a frag tank infested with red planaria, anyone got experience dealing with them? I suspect they hitched a ride on a coral I added in right before the trip. I would really want to try to avoid using chemicals. I was personally...

Hi im new so I am a little worried, I saw a colony of small moving white bugs on my heater, and now I see them all over my walls too. What are these???

Hi All, I see these white swirls on my zoa and they are closed up. I do have a lot of spirorbid worms in my tank. I tried to blow them off and it's not effective. I'm about to take the colony out to dip and try to brush them off. Please advise. Thanks.

Hello, Trying to ID the below, seems like an anenome type...they are spread throughout the tank. Seems they are bothering the corals. Anyone know what they are and how to get rid of them? Thanks!Image

Hi, I’m trying to identify a tiny worm. I added some live copepods and 1hour later my tank is covered in thousands of these tiny white worms. I’ve tried to get some good microscope pictures so maybe you could help me! Thanks!

Back in April I got this Gonipora and for months it's been enjoying life. About 1 week ago it stopped coming out and completely retracted. I noticed this brownish green spot on it, with a small tube coming out and what looks like whiskers growing all around the base of the coral. I saw this same...

Mille has these white spots I just noticed, nursing it back to health it was the sole survivor of 9 frags. It’s doing well color is back and polyps are extending. Shipping box got too hot. Are these flatworms I’ve got? Just noticed them… I’ve got a 6 line but he prefers copepods apparently or...

Hey, noticed this fuzxy growth growing on my clove polyps, the polyp that has the most of it won't open. Any idea what this is or what to do about it?

Any idea what these tube things are on the base of my Duncan?

I found this guy scooting along on my glass. I was certain it was a flatworm when it was on the glass. However, I became less certain when I pulled out and placed under a microscope. I haven’t see a flatworm without the “horns” and ruffles, and certainly not that pattern. Of course there are...

I've been down with Covid and I basically ignored my tank for two months. Generally speaking, bad things happened. I have a lot of window scrubbing to do. I got an invasion of cyano and bubble algae. I went after that with Chemiclean and a 20% water change. While I was dealing with that, I...

Hey guys so I was just going around and cleaning algae off my frags in my frag tank when I noticed a few of these guys crawling around and was wondering if anyone knows what they are.

Hi there, I have been away for the last week and have come home to these white critters on the wall, it seems to be a shell of sorts with something inside it. I don’t think it’s a Virminted. Would like to know what they are and how to get rid of them please

Hi everyone! Greetings from Indonesia! It's my very first post here.. I need a help on identifying these annoying creatures: They kinda look like a tiny shelled snail.. Around 2 weeks ago I noticed my zoas and palys aren't opening up and also some went missing. Few days ago I randomly...

Berghia Nudibranch now available at AlgaeBarn! https://www.algaebarn.com/shop/captive-bred/invertebrates/nudibranch/berghia-nudibranch/ These guys work FAST and will ONLY eat aiptasia!

I got 20 pounds of live rock that came with a ton of cool mushrooms and I put it in my qt this morning when it was still dark I saw this caterpillar looking creature that is red with white spots and horns I've looked for hours what it could be but I haven't matched a picture yet can you help...

HELP! I bought a 20 lb live rock that came with a bunch of mushrooms and than this morning at around 5:00 am so the lights were still off I saw this red and white creature come out looks almost like a caterpillar and has spikes....I tried to identify it but I can't seem to match the picture with...

What is this? I saw this on my rock. Is this a bad thing or a good thing? If bad, how do I remove it?

Hi, Hi, i’m currently batteling dinos and I was wondering if you could help me id these. Zoom is 250x. My guess is amphidinium small cell.