Unexpected Visitors: What Have Been Some Uninvited Guest In Your Tank

[Gumbies R Us]

Sometimes we order live rock, live sand, or other needs for our aquarium, and sometimes unexpected guests come along with the purchases. I wonder what uninvited guests you have had in your tank over the years!!

 

[MnFish1]

A three foot long bright blue ribbon worm- which I saw one time after receinving live rock from FL

 

[Dbichler]

Just the standard aptasia ball anemones and some crabs.

 

[nothing_fancy]

Palythoa Zoanthids

 

[o2manyfish]

I've had a couple of Black Gorrilla Crabs get up to about 5.5" across that had to be captured. They were big and ugly looking.

Then in the frag tank one day I turned over a Milka Stylophora Colony about the size of a big honey dew melon and there was a strawberry colored monster crab over 6" across. This was in a frag tank, so it didn't have anywhere to hide and had grown up, invisible to me just between the eggcrate and what was originally a small frag.

Dave B

 

[stevolough]

Dead bat floating in the sump. That was a bad day.

 

[Gumbies R Us]

Dead bat floating in the sump. That was a bad day.

How did that happen?

 

[stevolough]

Must have gotten in the house somehow. Looking for a dark place to hide I guess.

 

[DHill6]

Eunice worm which ate very expensive coral.

 

[yoranv]

Zoanthid spider… I have only seen one. A few other small colony’s were not looking too good so I took them out. I couldn’t risk losing the whole colony.

 

[Gumbies R Us]

Zoanthid spider… I have only seen one. A few other small colony’s were not looking too good so I took them out. I couldn’t risk losing the whole colony.

Never seen one of those before haha

 

[Megaloptera]

Cladonema hydrozoa medusa was one that I got really excited about.

 

[vetteguy53081]

Zoanthid spider… I have only seen one. A few other small colony’s were not looking too good so I took them out. I couldn’t risk losing the whole colony.

Youre lucky as they are usually in number and crawl into the head of each zoa and reproduce.

 

[Evil1]

Sabelidae aka tube worm or feather duster. Attached to base of frag plug. It was very tiny and at first I thought it was aphasia but then I noticed the tube. Growing quickly and a nice free addition to my reef.

 

[Gumbies R Us]

View attachment 3133665
Cladonema hydrozoa medusa was one that I got really excited about.

That is super neat!

 

[Megaloptera]

That is super neat!

What was even better is that there were hundreds of them in my refugium. It was so neat to watch them "swimming" and then settling on the glass.

 

[Gumbies R Us]

What was even better is that there were hundreds of them in my refugium. It was so neat to watch them "swimming" and then settling on the glass.

How did they show up for you?

 

[Megaloptera]

How did they show up for you?

My best guess is that it came in on the Chaeto.

 

[yoranv]

Youre lucky as they are usually in number and crawl into the head of each zoa and reproduce.

I check them every night with a bright flashlight and a magnifying glass, so far I haven’t seen any. But I keep on inspecting them!

 

[JoJosReef]

Eunice worms, gorilla crabs and a medusa work (which is a sea cucumber?)