Echinodorus subalatus

Scientific name: Echinodorus subalatus

Family: Alismataceae

Usual maximum size in aquariums: 25 - 40 cm (9.84 - 15.75 inch)

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Recommended pH range for the species: 6.5 - 7.8

Recommended water hardness (dGH): 4 - 12°N (71.43 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 20 - 26 °C (68 - 78.8°F)

Reproduction of the plant: Runners

Origin (in the wild): South America

How fast these plants grow: Normal

Recommended substrate: Sand

Demands on lighting: Bright

Ideal placement in a fish tank: Background

Family

Alismataceae

Common Name

Subalatus Sword Plant

Origin

Echinodorus subalatus is native to Central and South America, primarily thriving in the wetlands, rivers, and marshy regions of Brazil, Argentina, and Uruguay. In its natural habitat, this plant experiences fluctuating water levels, growing both fully submerged and emersed. This adaptability makes it a hardy and versatile choice for aquariums.

Propagation

Echinodorus subalatus reproduces primarily through runners that spread under the substrate, producing daughter plants at each node. Once these daughter plants develop their own root systems, they can be gently separated and replanted in different areas of the aquarium. Rhizome division can also occur in emersed settings, but this is rare in fully submerged environments. To ensure successful propagation, use nutrient-rich root tabs in the substrate to support the young plants as they settle in. This makes Echinodorus subalatus an excellent choice for aquarists looking to easily expand their plant collection.

Difficulty

Easy. Echinodorus subalatus is a hardy and undemanding plant that is suitable for both beginner and experienced aquarists. Its ability to tolerate a range of water conditions makes it an excellent choice for most tropical aquariums.

Short Description

Echinodorus subalatus, commonly known as the Subalatus Sword Plant, is a popular aquatic plant known for its bright green, lance-shaped leaves that provide depth and texture to any aquarium. It typically grows to a height of 25 to 40 cm (9.84 - 15.75 inches), making it perfect for background planting in medium to large tanks. The plant not only enhances the aesthetic appeal of aquariums but also aids in oxygenating the water, creating a healthy environment for fish and other tank inhabitants.

This plant grows at a normal rate under bright lighting conditions, though it can tolerate medium lighting as well. For optimal growth, Echinodorus subalatus thrives in sandy substrates with regular nutrient supplementation, such as root tabs. Be mindful of yellowing leaves, which can indicate a lack of iron or other nutrients. Regular pruning of dead or decaying leaves will help maintain the plant’s health, prevent nutrient loss, and keep the aquarium looking tidy.

Maintenance and Care

Echinodorus subalatus grows best in a pH range of 6.5 to 7.8 and tolerates water hardness between 4 and 12°N (71.43 - 214.29 ppm). The recommended temperature range is 20 - 26°C (68 - 78.8°F), making it ideal for tropical freshwater aquariums. This plant performs best when planted in a sandy substrate, which allows its rhizomes to spread and establish stable roots.

For best results, provide bright lighting, as it enhances the plant’s growth and vibrancy. While the plant can tolerate medium lighting, growth may slow, and the leaves may lose some of their brightness in lower light conditions. Fertilization is highly recommended during the acclimation period, as it supports strong root development and prevents nutrient deficiencies. Regular pruning of old or damaged leaves will promote new growth and prevent the plant from overwhelming the aquarium space.

Compatibility

Echinodorus subalatus is compatible with a variety of peaceful fish species and works well in community tanks. Its tall, dense leaves provide excellent cover for smaller fish, fry, and shrimp, offering them shelter and protection. Fish such as tetras, rasboras, and dwarf cichlids thrive in tanks with plants like Echinodorus subalatus, as it mimics their natural environment. However, caution should be taken if kept with herbivorous fish, such as plecos, or omnivorous fish, like goldfish, which may nibble on its delicate leaves.

Submersion and Aquascaping

Fully submersible, Echinodorus subalatus is prized for its use in aquascaping. Its tall, lance-shaped leaves create a dynamic, vertical structure, making it an excellent background plant for larger aquariums. The plant's vibrant green leaves add a lush, natural feel to aquascapes and work well in South American biotope setups, where it complements driftwood, rockwork, and other aquatic plants.

With its normal growth rate and minimal maintenance requirements, Echinodorus subalatus is a great choice for aquarists seeking to create a visually stunning, yet easy-to-maintain, aquascape. Its adaptability and resilience make it perfect for both beginners and experienced aquarists who want to add a natural, flowing element to their aquarium design.