Starlight Bristlenose Pleco (Ancistrus sp. “White Seam”)

Starlight Bristlenose Pleco (Ancistrus sp. “White Seam”)

The Starlight Bristlenose Pleco, also known as the White Seam Bristlenose, is a stunning and highly sought-after species from the Ancistrus genus. Native to Brazil’s Rio Negro, this fish is known for its dark body covered in white spots and distinctive white edging along the fins, giving it a striking “starlight” appearance.

In the wild, it inhabits warm, soft, tannin-rich waters, where it spends much of its time grazing on driftwood and biofilm. In the aquarium, it is hardy, adaptable, and an excellent algae grazer, making it both a functional and visually appealing addition to your tank.

Behaviour & Compatibility

Starlight Bristlenose Plecos are peaceful and generally solitary, but can be kept with a wide range of community fish.

• Compatible with most peaceful fish
• Safe with plants
• Suitable for community and planted aquariums
• Can be territorial with other plecos in smaller tanks

They are primarily bottom dwellers, often hiding during the day and becoming more active at night.

Tank Setup

To keep them thriving:

• Provide plenty of driftwood (essential for grazing and digestion)
• Include caves and hiding spots
• Suitable for planted aquariums
• Prefers clean, well-oxygenated water
• Moderate water flow is beneficial

Feeding

While excellent algae grazers, they still require a balanced diet:

• Algae wafers or sinking pellets
• Fresh vegetables (zucchini, cucumber, spinach)
• Occasional protein foods (frozen or live)

A varied diet helps maintain health, colour, and longevity.

Why You’ll Love Them

• Unique white “seam” fin edges and spotted pattern
• Excellent natural algae control
• Hardy and beginner-friendly
• Peaceful and community-safe
• Great for planted aquariums

Recommended Tank Parameters

• Temperature: 24 – 28°C
• pH: 5.5 – 7.5 (prefers softer, slightly acidic water)
• KH: 0 – 10 dKH
• Minimum Tank Size: 75L+ (20 gallons)

Care Summary

• Diet: Omnivore with strong herbivore preference
• Social Behaviour: Peaceful, can be territorial with other plecos
• Origin: Tank-bred (native to Rio Negro, Brazil)
• Adult Size: Up to 10–12 cm (4–5")
• Typical Purchase Size: 3 – 5 cm

Additional Notes

• Both males and females develop facial bristles (tentacles) as they mature
• Males typically have larger, more prominent bristles
• Driftwood is essential for long-term health and digestion

Sample photo is for reference only. Colour and pattern may vary between fish.