Anacharis najas
Anacharis najas
Anacharis najas is a fast-growing South American aquatic stem plant producing bright green, densely whorled leaves on long, flexible stems that create an exceptionally efficient natural oxygenator and nutrient absorber. A close relative of the commonly sold Egeria densa, Anacharis najas is valued for its reliable, fast growth across a very wide range of conditions — one of the most adaptable and practically useful aquarium plants available for beginners and for tanks where rapid nutrient uptake is needed.
Care tip: Anacharis najas is a floating plant that grows on the water surface without substrate. Avoid strong surface agitation and thin regularly to prevent complete surface coverage. Temperatures between 60–80°F support healthy growth.
Growing to 12 to 24 inches, Anacharis najas can be planted in the substrate as a background plant or left to float freely where it grows most vigorously. As a floating plant it creates natural fry cover and provides maximum oxygenation near the surface. Regular trimming of planted specimens maintains an attractive background; floating trimmings can be removed or left as additional floating cover.
This easy plant requires no CO₂ supplementation and grows in low to moderate lighting. The temperature range of 60 to 80°F reflects genuine cold tolerance. A pH of 6.5 to 7.5 provides comfortable conditions. Regular fertilization is beneficial but not essential in established tanks. The fast growth rate makes this one of the most effective natural nutrient managers available.
In the aquascape, Anacharis najas provides fast, reliable, green background coverage or floating management with excellent natural oxygenation and nutrient absorption. It is most commonly used in beginner tanks, breeding setups, fry tanks, and new aquariums where fast, reliable green coverage and natural nutrient uptake are immediately beneficial.
Anacharis najas is a classically dependable and genuinely easy aquarium plant for beginners and any setup that benefits from fast, reliable green coverage with excellent natural oxygenation. Its adaptability and nutrient-absorbing capacity make it one of the most practically useful plants in the freshwater hobby.
Care & Specifications
| Difficulty | Easy |
| Placement | Background or Floating |
| Max Height | 12–24 inches |
| Light Level | Low to Moderate |
| Temperature | 60–80°F |
| pH | 6.5–7.5 |
| CO2 Needs | Not Required |
| Origin | South America |
| Notes | Fast-growing oxygenator. Can be rooted or left floating. Ideal for beginners. |
