What are these?

[Zactheninja]

Bought these on a zoa rock, and they've moved themselves up there.
Are they nems?
I'm just curious about them.

 

[Armoredspider]

They look like nems. Could they be apastia ?(spelling?) they don't look much like it.

 

[Zactheninja]

I have some apastia?
And it looks totally different.
So idk, they're pretty though.

 

[Zactheninja]

The ? Was for spelling. Lol.

 

[Keithhjs]

Looks like majano anemone. Pest you don't want.

 

[Zactheninja]

Looks like majano anemone. Pest you don't want.

What do they do?

 

[Petrichor]

Majano are the same as aiptasia, just differently shaped. They'll sting corals, move around a lot, compete for food, etc. They multiple slightly slower than aiptasia I belive.

They are much prettier than aiptasia. Some people keep them in pest tanks because of that. I had a majano that was beautifully striped and didn't want to get rid of it.

 

[Zactheninja]

Yeah there really pretty.
Ill keep them for now, if thy get top put of hand I'll start getting rid of them.

And I found something else today in my tank.
Someone tell me what it is? (the white thing on the heater, sorry for bad pic)

 

[Armoredspider]

That looks like a nudibranch aka a sea slug. It looks like a lettuce one but white.

 

[Zactheninja]

That looks like a nudibranch aka a sea slug. It looks like a lettuce one but white.

What does it...do?
As in eat, will it hurt anything?

 

[Armoredspider]

Some species will eat anemones sponges and coral.

 

[Zactheninja]

Some species will eat anemones sponges and coral.

This could be bad then, I'll keep and eye on them. Thanks for the info!

 

[kdpuffer]

Nudibranches are very particular feeders, one species will eat strictly zoas while another eats strictly algae. They will only eat one type of food which varies by species. I would remove it to the sump if you have one if not keep a close eye on it and your corals.

 

[Zactheninja]

No sump. It's a 7 gallon lol.
Is there anyway to tell?

 

[Petrichor]

If it's on a place that has algae and if it's moving you should see a little trail cleaned of algae after it (meaning it's munching algae). If not, then it's probably bad.

Personally it doesn't look like a lettuce nudibranch to me (which eat algae), so you're going to have to be the judge on it if it is a lettuce nudi or not since you have the best view of it. Hopefully I'm mistaken and it's a harmless algae muncher.

 

[Sniperhank]

Agreed. If it isn't green then it isn't after algae. there color matches what they eat. I had white and blue ones after my blue symphodium. You need to remove it asap.

Edit: same nudibranch. Remove it!

 

[Armoredspider]

Sorry for the wrong id. All I know is from online research, I'm hoping to start my tank soon!

 

[Sniperhank]

Found a pic of the one I removed. Hope this looks familiar.

 

[Zactheninja]

That's the same bloody thing!
Now there hiding. I'll wait for my chance.

 

[Zactheninja]

Found them...they were munching on my star polyps, and the other was on my colt.
Colt is a goner but the polyps should be okay, thanks for helping me get these guys out.