[Chiefston]

Is this a worm, or leech? Heres two of them I pulled out of my substrate today. One side seems to have a sucker of some sort maybe? The other end is constantly wiggling around probing. Whatcha think? They are very dark brown.

 

[Kat12]

http://www.plantedtank.net/forums/showthread.php?t=639969 looks like a leech

 

[Aquasapien69]

Yep look like leeches

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[Chiefston]

I figured some sort of leech. Thanks for the replies.
I haven't noticed anything affecting my fish, they seem to prefer living in the substrate. Think its ok to just leave em? Doesn't seem like theres much alternative anyways...

 

[Subtletanks91]

I would do a deep substrate cleaning and dose with fenben

 

[lochaber]

Yes.

It is a worm. And it is a leech.



Leeches are just a specific type of worm.