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Fish

Green Phantom pleco

Hemiancistrus subviridis
French name : Pléco Green Phantom L200

Sold as the Green Phantom pleco (L200), Hemiancistrus subviridis is a striking loricariid from the fast, oxygen-rich upper Orinoco in Venezuela, its greenish body dusted with fine yellow spots. It lives among rocks in strong current, so it needs a mature tank with high oxygenation, brisk flow and stable warm water: temperature 26-30C, pH 6.0-7.5, soft to moderately hard. Provide caves and smooth stones; males are territorial toward one another, so keep one per tank unless space is generous. Despite the loricariid reputation for algae-eating, this species leans omnivorous with a preference for meatier fare: offer sinking pellets, frozen bloodworm and brine shrimp alongside some vegetables and biofilm. Sensitive to poor water quality and low oxygen, it rewards attentive maintenance with bold colour.

Water
Freshwater
Origin
Upper Rio Orinoco, Venezuela
Adult size
18 cm
Diet
Omnivore
Temperament
Semi-aggressive
Difficulty
Intermediate
Green Phantom pleco (Hemiancistrus subviridis)
Illustration

Water parameters

Temperature26 – 30 °C
pH6 – 7.5
Carbonate hardness (KH)1 – 8 °dKH
General hardness (GH)2 – 12 °dGH

Tank & stocking

Minimum tank volume200 L
Volume budget per individual 100 L — adds up with tank-mates

“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.

Frequently asked questions

What size aquarium does Green Phantom pleco need?

Provide at least 200 litres to keep Green Phantom pleco in good conditions.

What water parameters does Green Phantom pleco need?

A temperature of 26–30 °C, pH 6–7.5.

Is Green Phantom pleco peaceful or aggressive?

Its temperament is semi-aggressive.

What does Green Phantom pleco eat?

Its diet: omnivore.

How big does Green Phantom pleco get?

Around 18 cm as an adult.

Is Green Phantom pleco suitable for beginners?

Care level: intermediate.

Planning a tank with Green Phantom pleco?

AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.

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Fish from the same biotope

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