I have not kept them before. I have a little info on them in Chinese.
Hillstream species thrives in clear, slightly cooler water. Occupies lower to middle levels of water column.
Usually about 50mm (2") when sexually mature for females and males up to 70mm.
They are apparently bivalve spawners so need freshwater mussels or clams to breed.
Enjoy being in groups I read on one website.
But in general, info is scant as on these little guys. I would love to get my hands on a group.