(Unknown thing in tank) What In God's Name is This?

PlasticGalaxy

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Hello, was having a look into the caves just now and noticed the shrimp kicking up something... White? Something cream white and long. Had no idea what it was (and still don't). Switched on the tank light and dismantled the cave it was in, and plucked it out. Shirt sleeve is now wet and fish aren't happy. Presenting it to you, because I frankly have no answers as to what it could be. It isn't moving, and wasn't when I was taking it out of the tank.

Haven't had a significant fish death recently, but there's a chance it was a kuhli loach that had died in the tank move (or before hand). However, the black tips and strange pinched body don't match up to the way kuhli loaches look when they've been dead for a couple days.

The "body" is soft with a firm inside - like a dead fish would be - and smells like a dead fish. The thicker black tip is fan-like, and there are thin spines along one side of its body.

Haven't gotten new fish in for over a week - 3 very small clown loaches 10 days ago, then over a month ago I got 12 cardinal tetras, 6 rummynose tetras, and a blue phantom plec. All of the new fish are very small, and I doubt they could have been packing such huge luggage if this is a parasite or similar. Did a ~45% water change today, where the water pushed out a lot of debris from behind my plants - which is where I believe this has come from so suddenly.

Ammonia and nitrite sit almost consistently at 0.00ppm each, no precise number for nitrate but kept around 20-40ppm ambiently, drops below that on water change days. pH is 7.5, also have no exact kH or GH number but considered to be on the harder side.

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If anyone has suggestions as to what this could be, please let me know.
 
My first guess was that a Kuhli Loach died and got its scales polished off by the other loaches, but that doesn't explain the pinched body. Did you use fishing line anywhere in the tank? Sounds far-fetched, but it's possible it got caught up in some and died in the cave.
 
My first guess was that a Kuhli Loach died and got its scales polished off by the other loaches, but that doesn't explain the pinched body. Did you use fishing line anywhere in the tank? Sounds far-fetched, but it's possible it got caught up in some and died in the cave.
No, no fishing line. The body is the strange part though, which you've mentioned.
with the little black fan being what's left of its tail. Weird.
Yes! I completely forgot that they have those little fan tails, it seems so obvious now lol. It still doesn't make sense of the pinched part, assuming that'd be it's upper body? It's incredibly likely that the plecs got to it though, so if it is a kuhli loach, the tapered end may have "formed" as they ate it.
More pictures and close up. Put a ruler next to it so we can see how big it is.

Could be a dead khuli or fish poop
Been thrown away since, but it was approx. 2.5" long. I really doubt it being poo for several reasons, especially because it was so big and, like I mentioned in the original post, felt like any other dead fish. If anything else, I would assume it was a worm or something, but like you've all suggested I think it's just a kuhli loach.

Thank you all for the help, I do make a fuss over nothing lol
 

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