Baryancistrus demantoides L200 – Green Phantom Pleco

Baryancistrus demantoides L200, commonly known as the Green Phantom Pleco, is one of the most visually stunning plecos available in the aquarium hobby. Native to the Rio Orinoco basin in Venezuela, this species is admired for its deep green body coloration paired with striking orange or yellow edges on the dorsal and tail fins.

This unique color combination gives the Green Phantom Pleco a glowing appearance under aquarium lighting, making it a highly sought-after species among aquarists and aquascapers. Compared to many common plecos, Baryancistrus demantoides remains relatively manageable in size while still having a strong presence in the aquarium.

The Green Phantom Pleco is a bottom-dwelling algae grazer that spends much of its time attached to rocks, driftwood, and glass surfaces as it feeds on algae and biofilm. Its calm but slightly territorial nature makes it suitable for well-maintained community aquariums with other peaceful fish.

Key Features

• Popular Green Phantom Pleco (L200)

• Beautiful deep green body with orange/yellow fin edges

• Active algae grazer and bottom dweller

• Highly prized among pleco collectors

• Suitable for larger planted or community aquariums

• Unique coloration rarely seen in other plecos

Size

• Adult size: 18 – 20 cm

• Juveniles are usually 5 – 7 cm when sold

• Slow to moderate growth depending on diet and tank size

Temperament

Baryancistrus demantoides L200 is generally peaceful but can be mildly territorial toward other bottom dwellers.

• Peaceful with most community fish

• May defend its territory from other plecos

• Best kept single or in larger tanks if multiple plecos are present

• Mostly active during evening and nighttime

Water Conditions

Green Phantom Plecos require clean, well-oxygenated water similar to their natural river habitat.

• Temperature: 26 – 30°C (79 – 86°F)

• pH: 6.0 – 7.5

• GH: 2 – 10 dGH

• Ammonia/Nitrite: 0 ppm

• Nitrate: < 20 ppm

Regular 20–30% weekly water changes and strong filtration are recommended.

Tank Setup

Baryancistrus demantoides thrives in aquariums with strong water movement and plenty of structure.

Recommended setup includes:

• Driftwood and rock formations

• Caves or shaded areas for hiding

• Moderate to strong water flow

• Good oxygenation and filtration

• Sandy or smooth substrate to prevent injury

Minimum recommended tank size: 200 liters (~55 gallons).

Feeding Habits

Green Phantom Plecos are omnivores with strong herbivorous tendencies.

Diet should include:

• Algae wafers and sinking pleco pellets

• Blanched vegetables (zucchini, cucumber, spinach)

• Biofilm and natural algae

• Occasional protein foods such as bloodworms or brine shrimp

Feed once daily, preferably in the evening.

Tank Mates

Baryancistrus demantoides L200 works well in peaceful community aquariums.

Suitable tank mates:

• Tetras

• Rainbowfish

• Angelfish

• Corydoras

• Larger peaceful community fish

Tank mates to avoid:

• Highly aggressive cichlids

• Other territorial plecos in small tanks

• Fish that may harass bottom dwellers

Care and Maintenance

To keep a Green Phantom Pleco healthy:

• Maintain high water quality and strong filtration

• Provide hiding places and shaded areas

• Ensure good oxygenation and water movement

• Offer a balanced diet with plant matter

• Perform regular water changes

With proper care, Baryancistrus demantoides L200 can live 8–10 years in captivity.

Why Choose Baryancistrus demantoides L200?

• Stunning Green Phantom Pleco coloration

• Unique orange-edged fins

• Highly desirable among pleco collectors

• Active algae grazer for larger aquariums

• Adds a bold and exotic look to aquascapes

Baryancistrus demantoides L200 is an exceptional pleco species that combines beauty, rarity, and functionality. Its vibrant green coloration and graceful appearance make it a standout addition to large planted aquariums and peaceful community tanks. 🐟🌿