Found Worm in Tank

So, I was cleaning out my cichlid fry tank and found this worm. Please let me know your opinion on what kind it is:

1. Leftover from feeding black worms a couple months ago (although it is lighter). I did notice that some would get under decorations and still alive for several weeks after feeding when I vacuumed. I moved a couple pieces of deco from main tanks to fry tank.
2. Somehow got a bot fly worm
3. Internal parasite released by the mother fish before I pulled her from fry tank
4. Other?

No signs of parasites in adult fish. No flashing, lack of appetite, off color, etc.
I treat all new fish with levimasole during a 40 day quarantine due to a camallanus infestation a few years ago. I am super paranoid since then so this has me a little freaked out. The thought of treating all my tanks with levimasole at the same time is overwhelming.

 

Did you figure it out?

 

No. It looks just like a black worm except lighter. I just wonder if they lighten up after living underneath deco in a tank for several weeks. At least that is what I am hoping.
I just don't see how a nematode worm could survive the levimasole treatments, but there are other types that are not effected by it soooooo...... :-/

I guess I will start looking at pictures of different kinds of worms as well as more closely observing the cichlid tank. I also may look for the jungle parasite treatment food to feed as a precaution.

I don't think I will be feeding live black worms again.

 

So, the information I am finding is that a worm found on the bottom of the tank is not a harmful parasite. Since it looked, moved, and felt just like the black worms I recently fed with the exception of being a lighter color, I feel better. I don't find any pictures looking like it when sifting through harmful parasites.

I am constantly observing my fish and the stuff that is vacuumed out as well as the contents of filter boxes when replacing media and cleaning each month. I have been on high alert since the trauma of camallanus and that was several years ago now.

"One rule applies, to calm the nerves of the hobbyist; most worms seen outside the fish are usually not internal parasites and not considered as harmful to the fish. Parasitic or harmful worms will not be visible on the gravel or the glass of the aquarium."

 

Good!!! I'm glad to hear its nothing bad