I do like plecs and for some unknown reason I never ended up keeping one of these little guys, as you correctly state they are not a "pleco" at all, but an Asian hillstream loach. They come with a variety of common names, but the most likely species you have is Beaufortia kweichowensis.
They look very similar to the Vietnam Hillstream Loach, Sewellia lineolata, which I have kept.
All the hillstream loaches require very high oxygen levels and prefer cooler water. The B kweichowensis appears to be hardier than S lineolata, reflected by the high price of the latter. They usually ship them one to a bag due to high oxygen requirements and that adds greatly to their cost.
I eventually lost all my S lineolata as I could not keep the water cool enough for them in the fish room. I have another hillstream loach, much smaller but with a name to make up for that Gastromyzon ctenocephalus! They have survived well. There is a photo here
www.irishfishkeepers.com/cms/component/o...w/catid,27/id,30973/
As you will not be able to lower your temp due to other tank occupants I suggest you provide as much water agitation as possible, maybe with a filter return pointing at the glass or a flat stone where he can hang out and pretend he is at home
Daragh