You can never believe everything you see on YouTube. Anyone with no knowledge can make a video and make all sorts of claims. Always use reputable sites for research. The best site is Seriously Fish. There are several species commonly called hillstream loaches, here are a few on Seriously Fish. One thing they all have in common is a temperature below 24 deg C and the needs for fast flowing water.
Sewellia elongata — Seriously Fish
www.seriouslyfish.com
Beaufortia szechuanensis (Gastromyzon szechuanensis) — Seriously Fish
www.seriouslyfish.com