Strange little white worms help!

[Willcav123]

Hello as I was doing a water change in my pleco tank tonight I found these little white worms all over the walls of the tank. They are about an eighth of an inch long and white. Can not see any identifiable shapes to them and have never seen them before. I have two pleco tanks and give both tanks cuts from the same zucchini that I blanch. One tank does not have them and the other does. This tank is established and nothing new has been introduced except for different zucchinis when feeding anyone know what they are? Are they dangerous to my plecos. How to get rid of them? Thanks

 

[ruud]

Looks like Rhabdocoela. To a lot of small fish, a glass covered with these worms is a buffet.

Harmeless to pleco's.

 

[fishywoo]

If they don't have an arrow shaped head it might be Rhabdocoela. I had to look it up. I have them in my shrimp tank and got worried it might be predatory planaria.

If it's just Rhabdocoela, it's harmless and more like detritus worms feeding off organic matter meaning there's excess waste somewhere, usually in the substrate. Make sure to remove any food that isn't eaten to prevent decaying matter and maybe do a vacuum on the substrate.

Planaria that are predatory is a risk to eggs and invertebrates. They are the ones with the arrow shaped heads.

Detritus worms are usually longer, thinner, and and stringy, so I don't think it's that.

Now I have to double check my own tank.
=3

Ok, I have Rhabdocoela. I got a picture.



Does yours look like this? It's hard to see in your photos

 

[Willcav123]

If they don't have an arrow shaped head it might be Rhabdocoela. I had to look it up. I have them in my shrimp tank and got worried it might be predatory planaria.

If it's just Rhabdocoela, it's harmless and more like detritus worms feeding off organic matter meaning there's excess waste somewhere, usually in the substrate. Make sure to remove any food that isn't eaten to prevent decaying matter and maybe do a vacuum on the substrate.

Planaria that are predatory is a risk to eggs and invertebrates. They are the ones with the arrow shaped heads.

Detritus worms are usually longer, thinner, and and stringy, so I don't think it's that.

Now I have to double check my own tank.
=3

Ok, I have Rhabdocoela. I got a picture.

View attachment 932052

Does yours look like this? It's hard to see in your photos

Yea looks like those they are so small I don’t see any with a triangular head so I don’t think it’s planaria