urchin

Should I buy a long spined urchin to go in my 20 gal with 2 clownfish? Is it overstocking it? Will the spikes harm the fish? Sorry, I'm a noobie

Urchin decided to put down the empty shells and put on something a bit more colorful! Let’s see those cool urchin hats!

Looking to sell my long spine urchin $10 Located in Kalamazoo

So I've had lymphocystis in my tank now ever since I introduced this urchin (I saw the white stuff near his mouth when I took him out of the bag) and now my clowns have it. Been like that for a while and besides the things showing up on the clowns every once in a while nothing had has happened...

So right now, my urchin climbed my glass and I'm currently wondering... how. How does he attach himself to the glass? I thought that maybe he has a foot by its mouth but then I saw his mouth faced up to the surface (I was feeding him nori) and realized he's gripping the glass with his side...

I have an astraea snail that has been good at cleaning my tank, but it poops a lot. More than I even expected. I was wondering if any sea urchins have as much waste as snails. If any don’t have as much waste what type? Thanks.

Urchin hats? I know the 3d printed ones, but what are other cool urchin hats you've seen or experienced? Im talking corals, big shells, a hermit or two, etc

Hi everyone, ive loved the idea of urchins especially the tuxedo urchin just love the way they pick everything to wear as a little hat and parade around the tank. I dont think the urchin i have is a tuxedo urchin (LFS just said urchin) however he also picks things up and parades around the tank...

This is my urchin with my Aussie Deadpool mushroom on its head, it’s carried it all the way over from the opposite side of my tank lol. Is this normal and why do they do this?

Hi! so I was working on my research and was trying to identify what benthic organisms shown on the picture. I initially thought it was an urchin but turns out it was coral. Can anyone identify the type of coral it is please?

Hey Everybody! i have been toying with the idea of this for a few weeks, but want to see what kind of other tanks yall have. I really want to set up an urchin showcase tank. I personally love longspine sea urchins, Diadema setosum, and want to set something up for them. If you were going to...

Hi, my urchin has been losing spines, ive just noticed quite a few on the sand bed. I put it down to either he's hungry or possible salinity shock when my ATO put a little bit too much water into the tank (but I think he's hungry). I only just noticed them today, so its still quite new. The...

This thread is for the general discussion of the classified ad Red Tuxedo Urchins. For more information about this item, please click the link or ask a question in this thread. Please add to the discussion here.

I have a long spine urchin, tuxedo urchin, various hermits, emerald crabs, snowflake eels, and file fish.

I’m getting out of salt and back into freshwater. I have some livestock for sale then I will put up some equipment. Local pickup only (I live in West Knoxville). I have the following for sale: 2.5-3” a yellow Tang- $200 4-damsel fish (three black and white and one yellowtail) all get along-...

Someone please help!!! I have a pincushion urchin who’s been dropping spines… I thought it was shedding… I have really high nitrates and low ish salinity 1.021 ish and Ive been trying to bring up slow due to being told urchins are sensitive and the last water change I did is when he started...

Hey guys. I'm having trouble identifying this algae. It's growing in clumps everywhere in the tank. Mostly on rocks or frag plugs. It's really tough to pull off. Looks like small lettuce. I'm thinking turf algae as it doesn't look like anything else. haha And then what eats it? I only have a 60...

Has anyone found the stl for yoda ears? Looking to print some for my urchins.

I've heard that pincushion and tuxedo urchins will starfish. Has anyone experienced that, or is it safe to keep both in the tank at the same time?

My pincushion urchin has been slow moving around the tank lately but he still moves a lot. Sometimes he will stay in one spot for a little while then move. Some of his spines were drooping and the ones that weren’t drooping were moving around like crazy. Then when I checked again after about 3...

Hello, this is my first post here on reef2reef. I have a 13.5 evo with an AI Prime for lighting My tank is stocked with a ocelaris clown, six line wrasse, 1 squamosa clam, 1 small crocea clam, some corals, and a pincushion urchin. Lately there has been some things that are concerning me like...

Hi I am looking for a tuxedo urchin, or pincushion, and I am wondering if anyone has one that they do not need or want anymore that I can buy off them in the Los Angeles area. If so let me know :) Thanks I can also trade some corals with you for it.

After surviving a nudibrach takeover my tank is full of a purple hair type algae that is mixed in with nudibranchs that are dying off. Would a tuxedo urchin be able to eat it’s way around or thru the nudibranchs without harming itself?

Purchased as a “fire” urchin. Not sure what it is any help is greatly appreciated.