Pix & ID: Critters that come in your rocks: the good and the bad.

[m-six hundred]

I thought this was a zoanthid until it started to move.

Sorry for the fuzzy pic my camera is not the best at close ups.
I have not seen it before. Does it eat zoas?

That guy is very bad. Monti, Zoa eating something or another

 

[m-six hundred]

Is this aiptasia?

Hydroids, get rid of them

 

[Dave.H]

That guy is very bad. Monti, Zoa eating something or another

Thanks, That was the third one in as many days.

 

[hogfanreefer]

This thing was in my filter sock last evening. It was firm and rubber like. Red with darker spots all over it.

 

[shelk]

They are too small and i can't really tke a proper picture of them, the best way i can describe it's small white wiggly worms floating arround in the current

any idea what can it be?

 

[Rob in Puyallup]

Hi all,

I was just adding a bit of food to my tank a few minutes ago. While standing there I saw an odd, flat bell shaped critter zoom across the tank from front to back. It probably measures about an eighth of an inch long, a bit less in width. When it landed at disappeared in some of the coralline algae.

Sorry no pictures of this guy. Hoping someone around here might think of something from my vague description.

Okay. In regards to my post above, I just found this critter again, it's photo below. An isopod of some sort? It looks to be carrying eggs. Please lie and tell me that it's harmless. It seems to be eating the biofilm on the glass.

 

[Rob in Puyallup]

PS: I used Aiptasia-X on the three aiptasia that I could locate this morning. Amazingly easy to use and very quick acting!

 

[worm5406]

Okay. In regards to my post above, I just found this critter again, it's photo below. An isopod of some sort? It looks to be carrying eggs. Please lie and tell me that it's harmless. It seems to be eating the biofilm on the glass.

It is perfectly normal and a good item.

It keeps the junk down in the tank too. Cleans out crevasse..

 

[Rob in Puyallup]

So Worm... Are you lying like I asked you to? Lol

 

[cloak]

They are too small and i can't really tke a proper picture of them, the best way i can describe it's small white wiggly worms floating arround in the current

any idea what can it be?

My guess would be polychaete epitokes. (harmless)

 

[cloak]

Okay. In regards to my post above, I just found this critter again, it's photo below. An isopod of some sort? It looks to be carrying eggs. Please lie and tell me that it's harmless. It seems to be eating the biofilm on the glass.

From that picture, an isopod sounds about right. Whether or not it's harmless, I don't know. Perhaps this article will shed some light.

http://reefkeeping.com/issues/2002-05/rs/

 

[Rob in Puyallup]

Thanks for that, Cloak.

 

[worm5406]

So Worm... Are you lying like I asked you to? Lol

No that time it was the truth....

But I will be over next monday to pick up that tank.

 

[dzhuo]

couple of id's please

@shelk, The nudibranch is a young Elysia crispata and it's a harmless algae eater.

 

[larcomak11]

i have spotted about 3 of these around my tank while looking for my astrea snail and just wondering what the consensus is....im leaning towards a feather duster or something along those lines but i could be wrong. im looking at the hard white tube with the clear tentacles sticking out. the second i get near it, it retracts crazy fast

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[cloak]

They're both harmless feather dusters.

Check this out. (Serpulidae)

http://reefkeeping.com/issues/2003-05/rs/

 

[larcomak11]

They're both harmless feather dusters.

Check this out. (Serpulidae)

http://reefkeeping.com/issues/2003-05/rs/

alright, thank you! i was thinking that but when in doubt, it's nice having all you guys around!

 

[Rob in Puyallup]

Okay. I'll be out of town.

Please feed my dog!

 

[Rob in Puyallup]

No that time it was the truth....

But I will be over next monday to pick up that tank.

Okay. I'll be out of town.

Please feed my dog!

 

[hogfanreefer]

This thing was in my filter sock last evening. It was firm and rubber like. Red with darker spots all over it.

Sorry for the repeat. Anyone have any thoughts on what this could be?