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Echinodorus 'Devil's Eye'

Echinodorus 'Devil's Eye'

Echinodorus 'Devil's Eye' is a deeply captivating hybrid featuring highly unique, rigid foliage exploding with intense dark-red pigmentation and striking venation.

Taxonomy
Class:Liliopsida
Order:Alismatales
Family:Alismataceae
Genus:Echinodorus
Species:Echinodorus 'Devil's Eye'

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Water Temperature

20 - 28 °C

pH Value

6 - 8

Water type

Freshwater

Light

Medium

CO2

Medium

Expected height

30 cm

Expected width

20 cm

GH

4 - 20 dGH

KH

0 - 21 dKH

Species description

Geographical Origin and Habitat: This uniquely structured and intensely colored plant does not exist in the wild. Echinodorus "Devil's Eye" is a highly specialized, breathtakingly distinct commercial hybrid created specifically for the global aquarium hobby. It was meticulously crossbred from wild South American Amazon Sword stock by elite aquatic botanists, designed to solve the problem of large red swords losing their color in standard aquariums. In the aquarium, it behaves perfectly like a wildly resilient, deeply rooted, massive amphibious rosette plant.
Taxonomy & Genetics: Scientifically classified within the Alismataceae family, "Devil's Eye" is a highly prized, modern dwarf-to-medium cultivar. Taxonomically, it is an extremely complex hybrid. Genetically, it inherited the classic, indestructible survival traits of standard Amazon Swords, but its DNA completely suppresses massive vertical growth. Its true defining feature is a spectacular genetic mutation that forces extreme bi-coloration on every single leaf: the core produces intensely concentrated blood-red pigments, while the edges are completely restricted to pure green chlorophyll.
Physical Structure: The architectural structure of the "Devil's Eye" sword is deeply compact, highly structural, and fiercely disciplined. It is a rosette plant completely lacking vertical stems. The foundation is a massive, incredibly thick, tuberous subterranean rhizome that deploys an aggressive, deep-reaching white root system. The leaves erupt directly from the crown on distinct, extremely stiff petioles. The foliage is strictly broadly ovate to elliptical, perfectly medium-sized (20-30 cm), and incredibly rigid, aggressively arching slightly outward to display its colors.
Color & Texture: The coloration is absolutely explosive, breathtakingly contrasting, and visually arresting. Grown submerged under intense lighting, every newly emerged leaf displays a staggering visual pattern: the absolute core/center of the leaf is a blindingly bright, glowing blood-red or dark burgundy. This red core is violently contrasted by a strict, sharply defined border of solid, dark olive-green along the outer margins, creating the striking "Eye" effect. The texture is intensely rigid, extremely leathery, and perfectly smooth, feeling like hard plastic.

Care, breeding and tankmates

Lighting & CO2: It is an incredibly resilient, heavily pigmented hybrid that demands energy to maintain its pattern. While it will technically survive in shaded environments, its spectacular genetics will completely fail; the striking "Eye" pattern will disappear, and the leaves will fade to a dull muddy green. To unlock its compact rosette shape and force the violent contrast between the blood-red core and the green margins, blasting, high-intensity LED lighting is absolutely mandatory. Pressurized CO2 drastically speeds up its growth.
Nutrition & Substrate: As a highly specialized, intensely pigmented Amazon Sword hybrid, the "Devil's Eye" is an absolute, obligate root feeder. Its massive root system strictly demands a very deep (minimum 5 cm / 2 inches), heavily nutrient-dense substrate. It absolutely demands premium aquasoil heavily enriched with iron and macro-nutrient root tabs directly beneath the massive tuber to fuel its intense two-toned pigmentation. If starved of root nutrients, the dense red core will quickly turn pale yellow, and the leaf will dissolve.
Water Chemistry: Originating from highly stabilized nursery conditions, it is practically invincible regarding standard water parameters. It thrives effortlessly in heated tropical aquariums (22-28°C) and is exceptionally adaptable, comfortably tolerating both soft, acidic blackwater and rock-hard, highly alkaline tap water (pH 6.0 - 8.0). The single most critical environmental requirement is absolute chemical stability. It drastically prefers stable, unchanging parameters over perfectly optimized ones. It demands moderate water flow to keep its rigid, smooth leaves clean.
Space Management & Placement: Due to its deliberately compact size (rarely exceeding 20-30 cm height), intensely rigid ovate leaves, and commanding, pure blood-red and green contrasting color, "Devil's Eye" is an elite, indestructible midground centerpiece for medium to large aquariums. It MUST be planted as a singular focal point directly in the midground, entirely isolated from other red plants. Because it grows as a dense, disciplined rosette, it provides a perfectly organized visual anchor that violently draws the eye to its center without overgrowing the tank.
Pruning: Pruning is a simple, highly necessary procedure to maintain its dense aesthetic. Never attempt to trim a rigid leaf in half; the cut edge will instantly turn black, rot, and destroy the aesthetic. To prune dead, yellowing, or algae-covered older leaves, you must reach deep down into the absolute base of the dense rosette and cleanly snap or slice the stiff petiole directly at the crown. It rarely spreads via runners; instead, it slowly forms a massive, impenetrable, single-crowned anchor.
Risks & Diseases: The absolute greatest threat to the "Devil's Eye" sword is Green Spot Algae (GSA) and nutrient starvation. Because the highly rigid, smooth leaves live for years and grow relatively slowly, they act as massive landing pads for devastating Green Spot Algae if phosphate levels drop or light is too intense without adequate CO2. Once GSA aggressively spots the tough leaves, it is physically impossible to clean off and ruins the contrasting "Eye" aesthetic. The second risk is nutrient starvation; if root tabs run out, it will melt.

Geographic Origin and Distribution

This uniquely structured and intensely colored plant does not exist in the wild. Echinodorus "Devil's Eye" is a highly specialized, breathtakingly distinct commercial hybrid created specifically for the global aquarium hobby. It was meticulously crossbred from wild South American Amazon Sword stock by elite aquatic botanists, designed to solve the problem of large red swords losing their color in standard aquariums. In the aquarium, it behaves perfectly like a wildly resilient, deeply rooted, massive amphibious rosette plant.

Origin

Selective breeding and cultivarsExtra-Amazon South America

Plant profile

Placement
Midground
Due to its large size, this plant is best suited for the midground or background of the aquarium. It serves as an excellent focal point when given enough space to spread its leaves. Ensure it is not heavily shaded by other plants to promote optimal growth.
Botanical form
Rosette
It forms a classic rosette structure with sturdy leaves growing from a central crown. The foliage displays a striking dark red and green appearance that adds wonderful texture to the aquascape. Its root system is extensive and anchors the plant firmly in the substrate.
Growth
Slow
The growth rate is generally moderate under standard aquarium conditions. With the addition of CO2 injection and high lighting, it will produce new leaves much faster. It steadily establishes itself over a few weeks after planting.
Substrate
High
As a heavy root feeder, Echinodorus 'Devil's Eye' demands a deep, nutrient-rich substrate to support its extensive and robust root system. A minimum substrate depth of 5 to 7 centimeters is highly recommended to allow proper root anchoring and expansion. While it can survive in inert gravel or sand if heavily supplemented with root tabs, a dedicated aquasoil will provide the optimal conditions for vigorous growth and vibrant foliage. Ensuring continuous nutrient availability at the root zone is critical to prevent nutrient deficiencies.
Column fertilization
Recommended
Liquid fertilizers provide a beneficial supplement of trace elements directly to the leaves. Regular dosing of a complete fertilizer helps maintain the fresh dark red and green appearance of the foliage. However, column feeding should be combined with root feeding for best results.
Root fertilization
None
As a heavy root feeder, Echinodorus 'Devil's Eye' heavily relies on a fertile substrate. Inserting root tabs near the base every few months is crucial for its long-term health. A nutrient-rich aquasoil provides an ideal foundation for its expansive roots.
Trimming
Occasional
Maintenance involves removing the oldest outer leaves by cutting them close to the base. This prevents the plant from becoming too bulky and directs energy into fresh inner growth. Regular pruning keeps the rosette looking tidy and vibrant.
Propagation
Rhizome division
Propagation naturally occurs via adventitious plantlets that form on long flower stalks. Once the small plantlets develop their own roots and leaves, they can be safely detached. They should then be replanted directly into a nutrient-rich substrate.
Sensitivity
Moderate
This species is generally very hardy and adapts well to a wide range of water parameters. It prefers moderate to high lighting to maintain its specific dark red and green hues. Sudden extreme changes in water chemistry should be avoided to prevent leaf melt.
Layout role
Midground, accent
Its large structure makes it a perfect centerpiece or solitary accent in planted layouts. The dark red and green foliage provides a beautiful contrast against different textures and hardscape materials. It brings a natural, wild feel to both nature aquariums and biotopes.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Echinodorus 'Altlandsberg'

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Echinodorus 'Apart'

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Echinodorus 'Aseng'

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Echinodorus 'Bambi'

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Echinodorus 'Brauner Elefant'

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Echinodorus 'Dark Beauty'

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Echinodorus 'Digital Art'

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Echinodorus 'Dschungelstar' Nr. 1

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Echinodorus tenellus

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Echinodorus × barthii

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Echinodorus berteroi

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Echinodorus 'Vesuvius'

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Echinodorus uruguayensis

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Echinodorus quadricostatus

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Echinodorus argentinensis

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Echinodorus rigidifolius

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Echinodorus horizontalis

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Echinodorus ovalis

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Echinodorus grisebachii 'Parviflorus'

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Echinodorus cordifolius 'Mini'

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Echinodorus major

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Echinodorus 'Roter Oktober'

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Echinodorus 'Roter Pirat'

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Last updated: 06/30/2026
Echinodorus 'Devil's Eye' Care Guide & Tank Setup | Atlarium