Can Harlequin Rasbora and Hillstream Loach live together?

Harlequin Rasbora and Hillstream Loach are possible with care. The comparison on this page runs the same compatibility engine as the tank builder, checking temperature and pH overlap, predation by size, temperament, and known hard-pair conflicts.

Species Comparison

Harlequin Rasbora vs Hillstream Loach

Harlequin Rasbora

Trigonostigma heteromorpha

Hillstream Loach

Sewellia lineolata

Verdict:Possible with care

Side-by-side specs

Rasboras

Family

Loaches

2″

Adult size

3″

15gal

Min tank

30gal

72–81°F

Temperature

68–75°F

6–7.5

6.5–7.5

peaceful

Temperament

peaceful

Schooling

mid

Water level

bottom

Compatibility notes

warnHarlequin Rasbora and Hillstream Loach only narrowly overlap in temperature — keep within 72–75°F.

Try both in the builder →Compare different species