Sewellia lineolata, the Hillstream Loach. They like cool, fast-moving water but can live in most freshwater community set-ups. I have several in a 125 gallon with other hillstream species and gobies. My s. lineolatas have spawned numerous times and I have several generations in the tank. They will nom green or red algae, along with Repashy soilent green, frozen bloodworms, brine shrimp and algae wafers. They come from clear-water streams in southeast asia.
Mark