Loaches and hillstream loaches generally require a clean well-oxygenated tank, although they are not overly demanding of pH or hardness levels.
Preferred conditions for most species are acidic to neutral or slightly alkaline pH and fairly soft water, although moderate hardness is tolerated after acclimatization. Regular partial water changes are required to keep nitrates low and good filtration is recommended.
It is recommended to use a fine grade or rounded gravel, as loaches in particular like to sift through the substrate for food.
Loaches appreciate caves, holes, and other places to hide. Because they come from streams, They require water currents in the aquarium.