Otocinclus death

I came back home today to find my otocinclus dead at the front of my tank. I was wandering why it died so I can make sure it doesn't happen to any of my other five otos. The tank is fairly well planted, 46L, some neocaridinas and a pleco, with a tds of 137 and temp of 24.9C, if wanted I can take a test kit reading of GH, KH, Nitrates and PH. (I removed the dead fish as fast as I could.) If any other photos or details are needed please ask.

TropicalNewbie444 said:

I came back home today to find my otocinclus dead at the front of my tank. I was wandering why it died so I can make sure it doesn't happen to any of my other five otos. The tank is fairly well planted, 46L, some neocaridinas and a pleco, with a tds of 137 and temp of 24.9C, if wanted I can take a test kit reading of GH, KH, Nitrates and PH. (I removed the dead fish as fast as I could.) If any other photos or details are needed please ask. View attachment 139378View attachment 139379View attachment 139380View attachment 139381View attachment 139376

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What type of pleco is it? Please provide us with nitrate, nitrite and ammonia

The pleco is a small bristlenose which the otos seem to be fine with because they sometimes swin around it.
The tests for NH3, NO2 and NO3 show that levels are undetectable.

Sometimes fish just die. It may have taken a knock on something, it may have had some internal illness. As long as the other fish look fine you will have no problems.

Thanks for the advice, at the moment four of my otos are shoaling and swimming around whilst one is sitting on some drift wood and appears to be quite fat, hope its healthy, added a picture of it just in case.

Howdy! Sorry that your little buddy died. Are these otos relatively new? In my experience, otos are very frail when you first add them into a new environment. However, once settled do great as long as there is enough food for them. When you first got them did you deworm them? Most fish carry internal parasites from wholesalers, especially wild-caught fish which otos are mostly wild-caught. Fish with internal parasites tend to produce white stringy poop, tend to be lethargic, or seem to be skinny or bloated. Make sure to keep a close eye on your other otos to see if they produce those behaviours.

Thanks for the advice