Zodiac Loach

Overview

The Zodiac Loach / Triangle Hillstream Loach (Mesonoemacheilus triangularis) is an Indian hillstream loach with bold zodiac-like patterning. Requires clean, well-oxygenated water with current.

Water Parameters

• Temperature: 20–26°C (68–79°F); prefers cooler water
• pH: 6.5–7.5
• Hardness: 8–15 dGH

Tank Setup

• Minimum tank size: 75 litres for 4+
• Substrate: Rounded gravel or sand
• Decor: Rounded rocks, driftwood; hiding places essential
• Flow: Moderate to strong; they appreciate current

Diet

• Base: Sinking pellets, algae wafers
• Treats: Frozen bloodworms, brine shrimp, blanched vegetables

Temperament & Tank Mates

• Temperament: Peaceful, active
• Best companions: Other cool-water, current-loving fish — danios, rasboras, other hillstream loaches

Common Issues

• Prefer cooler, well-oxygenated water
• Do not tolerate warm, stagnant water
• Lifespan: 3–5 years