Redtail Sand Loach (Kapuasia maculiceps)

Redtail Sand Loach (Kapuasia maculiceps)

The Redtail Sand Loach is a rare and highly sought-after bottom-dwelling species originating from the soft, sandy river systems of Borneo (Kapuas River Basin). Known for its sleek, eel-like body and striking red tail, this species brings a unique and almost prehistoric look to any aquarium setup.

Unlike most common loaches, Kapuasia maculiceps is a true sand specialist. In the wild, it spends much of its time partially buried, using its streamlined body and subtle camouflage pattern to ambush small prey. Its behavior is both fascinating and rarely seen in the hobby, making it a standout species for collectors looking for something different.

This species does best in aquariums with fine sand substrate, subdued lighting, and strong water quality. It is generally peaceful but should be housed with similarly sized tank mates that won’t outcompete it for food. Due to its rarity and specialized care requirements, the Redtail Sand Loach is best suited for experienced aquarists.

Tank Requirements

• Minimum Tank Size: 55 gallons (larger preferred)
• Substrate: Fine sand (essential for natural behavior)
• Temperature: 75–82°F
• pH: 6.0–7.5
• Water Flow: Moderate

Diet

Carnivorous
Prefers live or frozen foods such as:

• Bloodworms
• Blackworms
• Small shrimp
• Sinking pellets (once acclimated)

Tank Mates

• Peaceful to semi-aggressive fish of similar size
• Avoid very small fish (may be eaten)
• Avoid overly aggressive or highly competitive feeders

Why We Love This Fish

• Rare import from Borneo
• Unique sand-burrowing behavior
• Striking red tail contrast
• Perfect for collectors of unusual and exotic species

If you're looking to add something truly different to your collection, the Redtail Sand Loach is a hidden gem that stands out both in behavior and appearance.