what are these worm like things

[cornbread_5]

i found these worm looking like thing on a clay pot in my tank , can anybody tell what they are and are they harmful.

 

[ward1066]

looks like planaria, caused from poor water conditions and too much feedings, not enough tank cleanings

 

[hmoobvwj]

They are in fact not planaria! They seem to be leeches....have you added any fish from other water sources?

 

[Citrinellus]

looks like planaria, caused from poor water conditions and too much feedings, not enough tank cleanings

Seriously compare that to the size of his fingernail, they're huge.

They are in fact not planaria! They seem to be
leeches....have you added any fish from other water sources?

I'm not sure about leeches but they definitely don't look friendly. Only thing i can recommend is to try to remove as many as you can. Hope, your infestation doesn't last long.

 

[swede]

they look similar to leeches which are parasitic. have you seen any of them on your fish?

 

[Dakkon]

looks like parasite

 

[fishmamma]

Those scare the **** out of me....!!!!

 

[cornbread_5]

i only see them on flower pots never on fish just on the pot

 

[swede]

what do you have in your tank?

 

[Polyptasaurus]

they almost look like leeches, but regardless of what they are... GET THEM OUT OF YOUR TANK!