Little things on my fish tank walls.

[Rainstorm~]

I had just cleaned out my fish tank about 3 months ago because of a snail overpopulation.
I added new rocks and fish to my 16 gal. Everything but one fish was knew.
So anyways, I was looking into the fish tank yesterday and seen these small white lines.. They were everywhere on the surfaces of all 4 sides including plants. 1 mm in length, and they were very thin in width.
I thought at first they were just many cracks in the glass, but once I looked at them for a while, they slowly moved. Today i seen one as long as 1 cm floating through the filter current twisting and curling [which was not from the current].
Yesterday I thought they could have been snail hatchlings somehow still in my tank, but now I am uncertain.

Please help!
(I cannot take any pictures of them because they are too small for the camera to capture. Plus my camera isn't very good.):irked:

I have:
2 Pearl Gouramies
1 dojo loach
1 hummingbird tetra

 

[axelrod12]

I had something similar, but in longer lengths once right after one of my tanks finished cycling. I have no idea what it is. I asked my LFS and he didn't either but he said he's seen it in tanks that contain salt a lot. I wiped it off and it never came back.

 

[Rainstorm~]

Okay, thanks for your help. I will try it!

 

[BettaFishMommy]

sounds like nematodes. they are harmless but do indicate that your tank maintenance is not up to par. increase water changes and substrate vacuuming and you should see them diminish/go away.

a great link for 'what is that 'bug' in my tank??': http://www.planetinverts.com/what_is_that_bug_in_my_aquarium.html