Anacharis (Egeria Densa)

Egeria densa, commonly known as Anacharis, is a hardy and fast-growing aquatic plant widely appreciated for its lush green stems and natural ability to improve water quality in freshwater aquariums. Native to South America, this versatile plant is a favorite among aquarists for its resilience, simplicity of care, and usefulness in both decorative aquascapes and breeding tanks.

Its long, leafy stems grow in dense clusters, creating a vibrant green backdrop that adds depth and movement to an aquarium. Anacharis can be planted in the substrate or left floating, allowing aquarists to easily adjust placement depending on the desired aquascape design.

In addition to its attractive appearance, Anacharis is well known for its ability to absorb excess nutrients and release oxygen into the water, helping maintain stable aquarium conditions and reduce algae growth. Its thick stems and abundant leaves also provide excellent hiding spaces for shrimp, fry, and small fish.

Durable, adaptable, and extremely easy to grow, Anacharis is an excellent plant for beginners, breeding tanks, and established planted aquariums alike.

Features

• Dense bright green stems that add natural texture to aquariums

• Fast-growing plant that helps absorb excess nutrients

• Naturally oxygenates aquarium water

• Provides shelter for shrimp, fry, and small fish

• Can be planted in substrate or used as a floating plant

• Very hardy and adaptable to a wide range of aquarium conditions

Care & Growing Conditions

Anacharis is a beginner-friendly plant that grows well in most freshwater aquariums.

Lighting: Low to moderate lighting; brighter light encourages faster growth
Water Temperature: 68–82°F
pH Range: 6.5–7.5
Water Flow: Moderate flow preferred
CO₂: Not required but can improve growth
Propagation: Easily propagated by cutting and replanting stem sections

Regular trimming helps maintain healthy growth and encourages fuller, bushier stems.

Anacharis can also be allowed to float freely, which often results in faster growth and increased nutrient absorption.

Ideal Uses

• Background plant in freshwater aquariums

• Natural algae control through nutrient absorption

• Oxygenating plant for improved water quality

• Shelter for shrimp, fry, and small fish

• Floating plant for shade and natural cover

Plant Details

Scientific Name: Egeria densa
Common Name: Anacharis / Brazilian Waterweed
Plant Type: Stem plant
Origin: South America
Growth Rate: Fast
Placement: Midground to Background / Floating
Difficulty Level: Easy
Max Height: 24–30 inches