What the hell are these things in my tank never noticed them

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PartyHacks

Plecostomus
MFK Member
Dec 20, 2019
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Have you tested your water?
Yes
If yes, what is your ammonia?
0
If yes, what is your nitrite?
0
If yes, what is your nitrate?
Low just did water change, tank is cycling liek it should be.
If I did not test my water...
  1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.
Do you do water changes?
Yes
What percentage of water do you change?
11-20%
How frequently do you change your water?
Every week
If I do not change my water...
  1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.
Just added new stock today and I looked closely at a small rock and saw it was crawling with these things!

Added 2 fire eels.

I have 2 fire eels, 4 bichir only.



here is a HD video. THERE IS BOTH ROD SHAPED WORMS AND LITTLE ROUND THINGS TOO


What exact products should I use! it is a 125 gallon please help!

 
Last edited:
Naididae worms are the most likely candidate for the long fellows. couldn't give an accurate guess for the other things without a higher quality photo. I'd guess some kind of crustacean
 
aaronhas said:
Naididae worms are the most likely candidate for the long fellows. couldn't give an accurate guess for the other things without a higher quality photo. I'd guess some kind of crustacean
Click to expand...

What can I do to wipe them out? They will need to be taken care of right?
 
PartyHacks said:
What can I do to wipe them out? They will need to be taken care of right?
Click to expand...
They are just a type of detritus worm, nothing to worry about. It just means that your either over feeding or ya haven't cleaned your tank lately. They only show up when there is an abundance of decaying matter in the tank. Pretty easy to get rid of em, just gotta keep the tank a bit cleaner and they won't resurface.

They are somewhat beneficial tho in the fact that they act as part of the biological filtration and can be used to feed fry.
 
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Look like planaria and scuds. Clean and remove any leftover food. Should eventually go away. Fish can eat them too.
 
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I too believe the worm-like things look like planaria (harmless by themselves), and there is something else small moving about (scuds is a good guess), also harmless. Maintenance (relative to tank biomass/feeding/waste produced) needs to be upped.
 
The round things look like ostrocods to me, but It is hard to see in the video. Some people call them seed shrimp. The only issue they seem to cause is impacting the GI of small fry like tetras and barbs. The shells look like clams and they can link together to cause a blockage. In larger fish they pass right through. I think copper would kill them, but it probably isn't worth it. Both of these seem to pop up when there are extra nutrients.

These are not my pictures
1610114688342.png1610114745090.png
 
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I agree with the others.
I wouldn’t try to kill them with any kind of medication or chemical treatment.
Just some extra cleaning with water changes and vacuum the substrate should take care of the problem.
Maybe make sure when you feed the tank that all the food is being consumed, if not you may want to cut the amount back.
 
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