Hi-Fin Green Phantom Pleco (Baryancistrus demantoides)

The Hi-Fin Green Phantom Pleco (Baryancistrus demantoides), commonly known as the Green Phantom Pleco, is a striking and highly sought-after species famous for its vibrant emerald-green coloration and tall dorsal fin. Under aquarium lighting, the body often displays subtle golden highlights along the fins, creating a beautiful shimmering effect.

Native to the upper Rio Orinoco basin in Venezuela and Colombia, this pleco inhabits fast-flowing, highly oxygenated rivers with rocky substrates. In the aquarium, the species thrives in setups that provide strong filtration, high oxygen levels, and plenty of caves or rocky hiding places.

The Hi-Fin Green Phantom Pleco is generally peaceful and makes an excellent addition to larger freshwater aquariums with other calm community fish.

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Why Aquarists Love This Pleco

• Brilliant emerald-green coloration
• Elegant high dorsal fin
• Unique and highly collectible pleco species
• Active and interesting bottom-dwelling fish

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Behavior & Compatibility

Green Phantom Plecos are typically peaceful toward other fish, though they may show territorial behavior toward other plecos if space is limited.

Suitable tank mates include:

• Larger tetras
• Angelfish
• Silver dollars
• Peaceful cichlids
• Other medium-sized community fish

Providing multiple caves and hiding areas will help reduce territorial behavior.

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Ideal Aquarium Setup

This species prefers aquariums that replicate river-style habitats.

Recommended aquarium features include:

• Rock caves and driftwood
• Sandy or fine gravel substrate
• Strong filtration and high oxygenation
• Moderate to strong water flow

Stable water quality is important for long-term health.

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Diet and Feeding

The Hi-Fin Green Phantom Pleco is primarily herbivorous with omnivorous tendencies.

Recommended foods include:

• Algae wafers
• Vegetable-based sinking pellets
• Blanched vegetables such as zucchini, cucumber, or spinach
• Occasional protein foods like bloodworms or brine shrimp

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Recommended Tank Parameters

Temperature: 75 – 82°F (24 – 28°C)
pH: 6.0 – 7.5
KH: 2 – 10 dKH
Minimum Tank Size: 75 gallons

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Size Information

Average Adult Size:
8 – 10 inches (20 – 25 cm)

Typical Sale Size:
2.5 – 3.5 inches (6 – 9 cm)

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Origin

Native to the Upper Rio Orinoco River system in South America, particularly Venezuela and Colombia.

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Add vibrant color and exotic beauty to your aquarium with the Hi-Fin Green Phantom Pleco (Baryancistrus demantoides), a stunning and highly prized species perfect for larger freshwater aquariums. 🐟