Chocolate Bristlenose Pleco (Ancistrus cirrhosus)

The Chocolate Bristlenose Pleco (Ancistrus cirrhosus) is a rich, dark variant of the popular bristlenose pleco, known for its deep brown coloration and subtle, natural look. This variety offers the same reliable algae-eating benefits as standard bristlenose plecos, but with a more refined, earthy appearance that blends beautifully into planted and natural-style aquariums.
At Magnolia Aquatics Company, our Chocolate Bristlenose Plecos are home-raised in our fishroom, producing hardy, well-conditioned fish that are already thriving in aquarium environments. These are active, healthy plecos that are feeding consistently and ready to settle in immediately.
🏅 Premium Home-Raised Stock
• Bred & raised in our home fishroom
• Healthy, active, and consistently feeding
• Deep, consistent chocolate coloration
• Quality over quantity — always
About the Species
Ancistrus cirrhosus is one of the most practical and popular plecos in the hobby, offering excellent algae control while staying a manageable size. The chocolate variant provides a more natural, subdued look compared to brighter albino forms, making it ideal for aquarists who prefer a more realistic, river-style aesthetic.
Males develop distinctive facial bristles as they mature, giving them a unique and recognizable appearance.
Color, Size & Presence
Chocolate Bristlenose Plecos display a deep brown coloration that ranges from milk chocolate to darker tones.
• Adult Size: 4–5 inches
• Body Type: Compact, armored pleco
• Coloration: Solid chocolate brown tones
• Visual Impact: Subtle but rich — ideal for natural aquascapes
👉 These are perfect for tanks where you want realism over flash.
Behavior & Compatibility
Chocolate Bristlenose Plecos are peaceful and easy to keep.
• Community-safe and non-aggressive
• Bottom-dwelling and surface-grazing
• May show mild territorial behavior with other plecos
• Compatible with most non-aggressive species
They spend their time grazing, hiding, and exploring surfaces.
Tank Requirements
These fish are hardy but benefit from a proper setup:
• Temperature: 72–80°F
• pH Range: 6.0–7.5
• Tank Size: 20 gallons minimum
• Environment: Driftwood, caves, and grazing surfaces
• Filtration: Moderate to strong
Driftwood is important for both digestion and natural behavior.
Feeding
Chocolate Bristlenose Plecos are reliable grazers but require a varied diet:
• Algae and biofilm
• Algae wafers and sinking foods
• Vegetables (zucchini, cucumber, etc.)
• Occasional protein foods
They should not rely solely on algae in the tank.
Breeding Overview
Bristlenose Plecos are one of the easiest plecos to breed:
• Cave spawners — males guard eggs
• Strong parental care from the male
• Fry are hardy and grow steadily
• Multiple spawns possible under proper conditions
Why Buy From Magnolia Aquatics Company?
We focus on raising fish the right way — not pushing volume.
Our Chocolate Bristlenose Plecos are:
• Raised in stable, clean environments
• Properly fed and conditioned
• Selected for health and coloration
When they arrive, they are ready to thrive — not recover.
Chocolate Bristlenose Plecos bring natural beauty, reliable function, and subtle richness to your aquarium — making them a perfect choice for both practical and aesthetic setups.
Magnolia Aquatics Company — Where quality comes from home.