Is Gratiola a Good Plant for African Lungfish?

Gratiola 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 12 dGH, which gives you enough room to aim for stable middle-ground conditions.

Their flow expectations are close enough to combine: Gratiola prefers moderate flow, while African Lungfish prefers gentle, low-flow water.

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

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

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

Gratiola 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.

Gratiola is a stem plant usually used midground and background.

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

Gratiola reaches about 45 cm tall by 10 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 line-of-sight breaks, fry refuge, and shrimp refuge. Place it where African Lungfish can actually use that structure instead of hiding the plant where it cannot do much.

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.

Gratiola can work with African Lungfish, but only if you are honest about the pressure the fish puts on the layout. This is the kind of pairing that succeeds when the plant is chosen for a reason, protected by placement, and supported by a maintenance routine that anticipates damage or crowding.