Otocinclus catfish bioload question (75 planted tank)
Personally, I've never had problems with otos dying. My have always been healthy an gut loaded when in my tank. You just need to be sure you have ample food sources an do a very slow drip acclamation.
Otos have a very low bio load, so 10 (depending on the Rest of your stock) should be fine
36 gallon fresh water