Back to Willisii fish guides

Is Willisii a Good Plant for African Lungfish?

Possible with Caution

Willisii can work with African Lungfish, but this is a possible with caution pairing. The plant may need a protected position, stronger anchoring, or companion plants before it feels reliable in day-to-day use. Fish pressure is the main concern, so the plant needs protection or a tougher substitute.

Willisii

Cryptocoryne x willisii

View plant profile
PlacementForeground
LightLow
DifficultyBeginner
Size20 × 15 cm

African Lungfish

Protopterus annectens

View fish profile
TemperamentHighly Aggressive
FamilyOddballs
Temp24–30°C
Water TypeFreshwater Only

Quick Decision

A plant can be technically compatible with a fish and still fail in the actual tank if the fish digs, chews, needs denser cover, or uses a different part of the layout.

Overall fit

68/100

Possible, but the scape needs more care.

Water match

Workable overlap

Shared range: 24-28°C, pH 6-7.5, 5-15 dGH.

Plant pressure

High

African Lungfish may chew, uproot, or stress this plant.

Layout value

Moderate cover

Willisii helps with good refuge for shrimp, good grazing surface, and breaks lines of sight.

Plant and Fish Fit Notes

Use these signals to decide whether the plant is doing useful work for the fish, or whether it is only surviving beside it.

Temperature
Willisii20-28°C
African Lungfish24-30°C

Overlap: 24-28°C.

pH
Willisii6-7.5
African Lungfish6-8

Overlap: pH 6-7.5.

Hardness
Willisii4-15 dGH
African Lungfish5-20 dGH

Overlap: 5-15 dGH.

Water and flow
WillisiiFreshwater Only, Low (Still Water)
African LungfishFreshwater Only, Low (Still Water)

Flow expectations are close enough for one layout.

Space used
WillisiiForeground and Midground
African LungfishBottom (Substrate), Middle (Open Water), and Top (Surface)
Pressure signals
WillisiiHigh uproot resistance, Standard leaves
African LungfishHighly Aggressive, Piscivore (Eats small/nano fish), Generally Aggressive, and Aggressive to same species/look-alikes

Plant pressure: High.

Planting value
WillisiiGood refuge for shrimp, Good grazing surface, and Breaks lines of sight, Nutrient-rich substrate preferred
African LungfishSand (Sifters), Smooth Gravel (Sensitive Barbels), and Driftwood (Digestion/Hiding)

Shared Tank Conditions

Willisii fits inside the water range normally used for African Lungfish. The shared window is about 24 to 28 °C, pH 6 to 7.5, and 5 to 15 dGH, which gives you enough room to aim for stable middle-ground conditions.

Both do best with gentle, low-flow water, so circulation does not need to be split into competing zones.

Both are suited to freshwater, so salinity does not add an extra planning problem.

Fish Pressure and Plant Resilience

African Lungfish puts heavy pressure on plants, so this species is likely to be chewed, uprooted, or stressed in day-to-day use.

Willisii has moderate cover density, high uproot resistance, and standard leaves. It can also help with shrimp refuge, grazing surfaces, and breaking up sight lines.

Willisii is less tempting than softer, more palatable plants for known nibblers.

The point to watch is african Lungfish may still investigate the plant, but the tougher foliage gives it a better chance.

Layout Fit

Willisii is a rosette / crown plant usually used foreground and midground.

African Lungfish is an oddball fish, so the pairing works best when the planting style supports how that fish uses space and cover.

Willisii reaches about 20 cm tall by 15 cm wide and is usually rooted in substrate with nutrient-rich substrate preferred. That makes placement and anchoring more important than simply adding a larger bunch of stems or leaves.

In this pairing, the useful plant values are shrimp refuge, grazing surfaces, and line-of-sight breaks. Place it where African Lungfish can actually use that structure instead of hiding the plant where it cannot do much.

Practical Recommendation

Treat this as a managed pairing. Plant it securely, give it time to root or attach, and use other plants or hardscape if the fish needs more shelter than one species can provide.

The decision should center on this signal: African Lungfish may still investigate the plant, but the tougher foliage gives it a better chance.

Frequently Asked Questions About Willisii and African Lungfish

Is Willisii a good plant for African Lungfish?

Willisii can work with African Lungfish, but this is a possible with caution pairing. The plant may need a protected position, stronger anchoring, or companion plants before it feels reliable in day-to-day use. Fish pressure is the main concern, so the plant needs protection or a tougher substitute.

Can African Lungfish damage Willisii?

African Lungfish may still investigate the plant, but the tougher foliage gives it a better chance.

Do Willisii and African Lungfish share the same water conditions?

Willisii and African Lungfish share a workable water window around 24 to 28 °C, pH 6 to 7.5, and 5 to 15 dGH. Keep the tank near the middle of that overlap for the best long-term result.

What does Willisii add to a tank with African Lungfish?

Willisii is less tempting than softer, more palatable plants for known nibblers.

What is the main risk in this plant and fish pairing?

African Lungfish may still investigate the plant, but the tougher foliage gives it a better chance.


Other Fish for Willisii

Other Plants for African Lungfish