identification requested

Hi everyone, I just found this Flatworm in my tank and need help identifying it so I know how urgently I need to start treatment with Flatworm eXit. I already have some harmless Acoel flatworms in my tank that I remove manually, but if this new flatworm isn't completely harmless, a proper...

Hello all, I am trying to identify a possible encrusting Algae/Bacteria. It is brown/black and competing with my coralline algae. It is encrusting in a strongly attached layer and has a similar feel to coralline algae although smoother. It doesn’t seem to be harming or competing with my corals...

Found these in my tank while looking at it with a flash light , very small so it was hard to get a picture but if anyone would be able to tell me what they are or what they could be I’d appreciate it. I added what video and pictures I could take after catching two in sample cup

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?

Hello everyone! Today i got some live rock to add to my 65L tank to fill things out a bit and I got 2 surprise new residents (that i know of so far). I'm pretty sure the mystery star is a brittle star, which worries me a bit because i primarily keep 4 peppermint shrimp and 2 astrea snails as my...

Hey reefers, I need help with an algae/bacteria ID. I’m at my wit’s end- nothing seems to match 100%. TL;DR: 664 gallon inter-plumbed trough system in retail setting. Bubbly/turfy green/brown eyesore appeared about the same time as nutrients bottoming out a few months ago. Stabilizing chems...

Hi everyone. I’ve been struggling with dinos for the past couple months. Unfortunately, my tank is too clean, despite my best attempts to dirty it up. my nutrients last time I checked were 1-3 ppm N03, and 0.09 P04. I’m doing more water tests now. I’ll have the latest readings in about 30...

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...

Was looking at my duncan's progress since I started feeding AB+ (big improvement!). Noticed this black stringy bit of like filamentous fiber coming out of a spot on its body Concerned it's a parasite or something that needs attention. Please see attached

Just got into the Torch game and wanted some confirmation on these IDs From Right to left. Dragonsoul, 24k, Grim Reaper, Todd's (has yellow streaks on base), browned out Holy Guac? I bought the 24k and "holy guac" from a reefapolooza show at chat TN. Holy Guac had a lot more green in it...

Hi there! I recently started my tank and got some GSP and some Zoanthids. Can anyone tell me the type of Zoanthids these are along with my GSP? My GSP I think is a branching variety but it doesn’t have the fully green polyps. Thanks!

I’m a little concerned about my Melanurus Wrasse and not sure if this behavior is normal. Tank: 55 gal w/20 gal sump about 5 months old Water: - Nitrites/Ammonia: 0 - Nitrates: 5-10 -Ph: 8-8.15 -Alk: 9-10 I bought my Melanurus Wrasse about 3 months ago. Of that time, I’ve barely seen her; she...

Cleaning tank we found these… they are moving. Living in the foam / charcoal filter and on/ in the ceramic bag. 2 clowns. Bicolor goby Watchman pistol shrimp pair. I feel pellets and the frozen for the shrimp. Can frozen food come alive? Haven’t put pods in it. First time seeing them. 7...

Hey all, I've been fighting what I thought was green hair algae for quite awhile. There are some areas it's growing rather thick, almost like bryopsis. Can anyone identify? I thought bryopsis felt firm this still feels very hairy and soft.

Hey all, I've been keeping an eye on this, but I'm not sure what it actually is. I took a look at some of the pests/id threads and google reverse search but both didn't really help me id it. It appears to be a sponge, but there are no siphons and it is growing much faster than any sponge I've...

Howdy folks! First post here. Found in the dip of a shipment of corals from Indonesia, not positive what colony it came out of. Any ideas what it could be? Body shape resembles a bumblebee shrimp.

I have an Aqua Medic Armatus XS (super tiny 8L/2G pico tank). It's been running for a few months. Two weeks ago I added some Zoanthids that seem to be doing okay, and this weekend I bought what I thought was Green Star Polyp at my LFS. However, when looking at pictures of GSP online, I'm not...

Picked up this Chalice today at work but we didn’t know the name of it, was hoping someone was about to identify it for me. Thanks!!

Microscope images under a cover slip, kinda squashed: Microscope images without cover slip (they were moving around so they're all in different orientations): Gif attempt to show motion (Couldn't figure out how to take a proper video so I pieced it together from multiple stills, didn't...

When I ordered some other corals I also got an extra zoanthid or similar coral. I’m having a hard time finding information on these: unlike my other zoas they are much larger and have a prominent stony base. They do not have a round bulbous appearance when contracted and instead depress...

A couple weeks ago I added a half pound piece of live rock to my nano as an island for the mushroom I’m planning on adding. Today I noticed this really small thing that looks kind of like a polyp on the rock near a hole. Any idea what it could be? There’s also a similar looking one towards the...

could anyone help me figure out if this chalice coral would extend sweeper tentacles? We have a spot perfect for it and we’re willing to move the hammer and zoas but the sps corals above the spot have attached to the rocks already

I recently added a porcelain crab to my nano, and I read that some species host in nems and some don’t. Can anyone ID him and tell me if he’s one that would prefer a nem in the future? I’m worried that if he is an anemone crab then he and my clowns will fight over it. I also know he’s a filter...

Part 2 of Tampa Bay Saltwater @LiverockRocks came in today loaded with hitchhikers, critters, and freebies! Please help with the following