What is this?

[WarDaddy]

I found this thing in my Canoister filter that runs the horse tank.

I did love a Black Velvet Slug... I have no idea what happened to him..., but what is that thing? I have it in a cup of water for now...

 

[SNAKEMANVET]

I think that might be a pencil worm, just guessing. I have never seen one out of it's hole.

 

[venwu225]

peanut worm, sipuncula.

What the heck is a pencil worm? Whats the latin name?

 

[Sk8r]

I always wondered why they were called peanut worms, since the shape most people see is more like an elephant's trunk. This explains it all.

 

[romunov]

Peanuts, get your peanuts!

 

[mnmsea]

when he is in water does he extend and have little hairs or short tentacles at the mouth end? I am questioning that I have a peanut worm in my rocks. I can't see the whole thing but when he extends he is about an inch and I could see little hairs at the mouth end. I was told he might be a peanut worm...as long as he doesn't eat anything like my fish!