July 23, 2026

Java Fern vs Anubias

Java fern and Anubias are both easy rhizome plants that grow on wood or rock in low light without CO2. Java fern has longer, fern-like leaves and grows a little faster, while Anubias has thick, rounded leaves and grows more slowly. Many aquascapes use both.

Java Fern vs Anubias at a Glance

Java fern and Anubias are two of the most dependable epiphytic plants in freshwater aquariums. Both tolerate moderate or low light, grow from rhizomes, and can be attached to wood or stone, but their leaf shape, growth habit, mature size, and propagation differ.

Java fern generally produces longer fern-like leaves from a creeping rhizome. Anubias species and cultivars range from tiny nana forms to large broad-leaved plants, giving them more variation in scale.

Planting Method and Rhizome Care

Neither plant should have its rhizome buried deeply. Roots can grow into substrate, but the thick rhizome needs exposure. This makes both useful in tanks where hardscape planting is easier than maintaining nutrient-rich soil.

Light Requirements and Growth Rate

Both tolerate low light, but low light does not mean no light. Growth slows when illumination is extremely weak. Conversely, excessive light can encourage algae because old leaves remain in place for a long time.

Anubias is often slower growing than Java fern, although growth varies by species, cultivar, nutrients, and conditions. Slow growth reduces trimming but also means algae-damaged leaves take time to replace.

Size, Texture, and Aquascaping Uses

Anubias has thick, durable leaves that attach visually well to rocks and shaded wood. Java fern often creates a taller, more flowing mass and can hide equipment or fill the transition between hardscape and background.

Java fern can create height with narrow or branching cultivars. Anubias provides broad leaf shapes and compact clumps. Combining them can create texture contrast without adding demanding plant species.

Choose mature size carefully. Anubias barteri can become much larger than Anubias nana ‘Petite’, just as standard Java fern can outgrow spaces intended for compact cultivars.

Nutrients, CO2, and Water Conditions

Both plants obtain nutrients from the water column and benefit from consistent availability of essential macro- and micronutrients. Root tabs are not their primary nutritional strategy when the rhizome is attached above the substrate.

Injected CO2 is not required for either plant. CO2 can support faster growth in a balanced planted aquarium, but high light and aggressive fertilization are unnecessary for basic success.

Propagation and Maintenance

Java fern commonly produces plantlets on leaves and can be propagated by rhizome division. Anubias is most predictably propagated by cutting a healthy rhizome into sections with leaves and roots.

Maintenance consists mainly of removing old leaves, controlling algae, and dividing clumps that become too large. Do not repeatedly move attached plants unless the layout requires it.

Which Plant Should You Choose?

For a shaded hardscape foreground or compact detail, a small Anubias is often easier to scale. For taller midground texture or a larger mass, Java fern may be more useful.

There is no need to choose only one. Their care requirements overlap enough that many beginner planted aquariums use both, provided each cultivar’s mature size is planned.

Frequently Asked Questions

Is Java Fern or Anubias Easier to Grow?

Both are beginner-friendly when their rhizomes remain exposed and lighting is reasonable. Anubias is often slower, while Java fern can produce a larger flowing mass.

Do Java Fern and Anubias Need Substrate?

No. Both can attach to wood or rock and obtain much of their nutrition from the water column. Their roots may enter substrate, but the rhizome should not be buried.

Which Plant Needs Less Light?

Both tolerate low light. Extremely weak light still limits growth, while excessive light can encourage algae on their slow-growing leaves.

Which Grows Faster, Java Fern or Anubias?

Java fern often grows faster than many Anubias varieties, although cultivar, nutrients, light, CO2, and water conditions influence growth.

Can Java Fern and Anubias Grow Together?

Yes. Their overlapping care requirements make them a useful combination, and their different leaf shapes create visual contrast.

Do Either of These Plants Need CO2?

Neither requires injected CO2 for basic success. CO2 can increase growth when other resources are balanced.

Which Is Better for a Nano Aquarium?

Small Anubias cultivars are especially easy to scale in nano tanks. Compact Java fern cultivars can also work, but standard forms may become too large.

Java Fern vs Anubias at a Glance

Planting Method and Rhizome Care

Light Requirements and Growth Rate

Size, Texture, and Aquascaping Uses

Nutrients, CO2, and Water Conditions

Propagation and Maintenance

Which Plant Should You Choose?

Frequently Asked Questions

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