12g might not be enough for two, since they grow to 3" and can be territorial with one another. Quite honestly, I wouldn't even have one in there unless it was kept in thriving conditions.
I found this article describing how to set up a river tank. There's likely lots of info on this site about hillstream loaches. I'm sure most people don't keep their loaches in this type of tank, just thought it was interesting.
I found this article describing how to set up a river tank. There's likely lots of info on this site about hillstream loaches. I'm sure most people don't keep their loaches in this type of tank, just thought it was interesting.