Butterfly Hillstream Loach tank mates
Beaufortia kweichowensis
6 rated pairings from the Butterfly Hillstream Loach care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Butterfly Hillstream Loach needs at least 30 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Hillstream Loach
Sewellia lineolata
20 gal min · 2.5" adult · Peaceful
Same habitat requirements; high-flow, cool, oxygenated water suits both species perfectly
Stiphodon Goby
Stiphodon ornatus
15 gal min · 2" adult · Peaceful
Shares preference for fast-flowing, well-oxygenated streams and similar diet of biofilm

White Cloud Mountain Minnow
Tanichthys albonubes
10 gal min · 1.5" adult · Peaceful
Thrives in the same cool, well-oxygenated conditions and is entirely peaceful
Good matches
3 · Compatible with normal care — watch space and numbers.
Zebra Danio
Danio rerio
10 gal min · 2" adult · Peaceful
Active, peaceful, and tolerates cooler temperatures similar to the loach's requirements
Rosy Loach
Petruichthys sp. rosy
10 gal min · 1.2" adult · Peaceful
Small, peaceful loach that coexists well without competing for the same microhabitat

Amano Shrimp
Caridina multidentata
10 gal min · 2" adult · Peaceful
Peaceful algae eaters that share similar water quality needs; loaches generally ignore them
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.