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FishintermediateFreshwater

Green Phantom Pleco

Hemiancistrus subviridis

AnimaliaChordataActinopterygiiSiluriformesLoricariidae

📍 Orinoco Basin, Venezuela

Ask Finn

Also known as L200, this breathtaking pleco displays a bright olive-green body with yellow spots. Highly prized by pleco enthusiasts. Needs warm, well-oxygenated water and driftwood. Cave spawner.

Size6"
Min Tank40g
semi-aggressive
Zonebottom

Care Guide

Diet

Green Phantom Plecos are primarily herbivorous and wood-eaters, requiring a diet rich in vegetable matter and driftwood for rasping and digestion. Offer high-quality algae wafers, blanched vegetables (zucchini, spinach, cucumber), and specialized pleco pellets 3-4 times weekly. Supplement occasionally with frozen bloodworms or brine shrimp, but vegetables should comprise 80% of their diet.

Behavior

This pleco is nocturnal and semi-aggressive, spending daylight hours hidden in caves or under driftwood and becoming more active at night. Males are territorial and will defend caves during breeding season, potentially harassing other bottom-dwellers. They are generally peaceful with fish too large to fit in their mouths but may nip at slower-moving species or consume small shrimp.

Breeding

Breeding Green Phantom Plecos in captivity is difficult and rarely achieved by hobbyists. They are cave spawners requiring specific water conditions (warm, slightly acidic, well-oxygenated), multiple hiding spots, and mature males that aggressively guard eggs. Success requires patience, ideal water parameters, and a dedicated breeding setup separate from community tanks.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, rapid breathing, lethargy, rubbing against objects

Treatment

Raise temperature gradually to 28-30°C, perform 25% water changes daily, use aquarium salt (1 tsp per 5 gallons) or ich medication; maintain excellent water quality

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Improve water quality with frequent partial changes, remove decaying driftwood, use antibacterial medication if severe; ensure adequate oxygenation

Bacterial Infection

Symptoms

Open sores, cloudy eyes, loss of appetite, torn fins, behavioral changes

Treatment

Perform 30% water change immediately, treat with broad-spectrum antibiotic medication, isolate if possible, maintain pristine water conditions

Malnutrition/Vitamin Deficiency

Symptoms

Stunted growth, faded coloration, lethargy, loss of appetite

Treatment

Provide varied diet with quality algae wafers, fresh vegetables, and occasional protein; ensure adequate driftwood for wood-eating behavior

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Quick Facts

pH
5.5–7.5
diet
algae/wood/vegetables
maxSize
6 inches
minTankSize
40 gallons
temperature
77–86°F (25–30°C)

Temperature

77–86°F

25–30°C

Stats

Community tips0
Kept by0 hobbyists