HomeCompare fishCoolie loach vs Hillstream loach Coolie loach vs Hillstream loach: can they live together? Verdict: With cautionTheir preferred pH ranges don't overlap.Both are comfortable at 24–25°C (75–77°F).Minimum tank for the pair: 75 L (20 US gal)Side by sideCoolie loachHillstream loachAdult size10 cm (3.9 in)6.5 cm (2.6 in)Minimum tank40 L (11 US gal)75 L (20 US gal)Temperature24–30°C (75–86°F)23–25°C (73–77°F)pH5.5–6.57.0TemperamentPeacefulPeacefulCommunity tankGood–Care level–DifficultDietOmnivoreOmnivoreSpecies profilesCoolie loachPangio kuhliiHillstream loachGastromyzon punctulatus