Mysterious Thing in Tank (Leech? Root Tab?)

[Jacob B]

Hey everyone,

Can someone help ID this mysterious thing that showed up in my tank today? I'm thinking that it is either a dried aquarium leech (planaria?) that I accidentally added with some live black worms that I bought today, or the empty shell of an Aquarium Co-op Root Tab which I added to my tank a month ago.

.  .

Thanks,
Jacob

Edited May 2, 2021 by Jacob B
Enlarging picture #3

[xXInkedPhoenixX]

Certainly looks like a planeria from all the google images I see- just a little more funky shaped. Not that they aren't already. 

[Evan]

Worm

[GardenStateGoldfish]

Leeches move very uniquely, if it slides its not a leech. If it reaches with its front and then slinks its but forward to its face then its a leach, kinda like a slinky

[FriendlyLoach]

It looks like some type of worm, I would keep it out of the tank for now. 

[PlaneFishGuy]

Maybe a snail leech??? 

[Biotope Biologist]

That is a species of leech. I would have difficulty ID'ing to species without it in hand, but it likely came in with the black worms. Platyhelminthes are not segmented, and leeches uniquely possess a small disc called the posterior or caudal sucker at the end of their body to attach to rocks and vegetation