Is Willisii a Good Plant for Duplicareus Corydoras?

Willisii fits inside the water range normally used for Duplicareus Corydoras. The shared window is about 22 to 26 °C, pH 6 to 7.2, and 4 to 12 dGH, which gives you enough room to aim for stable middle-ground conditions.

Their flow expectations are close enough to combine: Willisii prefers gentle, low-flow water, while Duplicareus Corydoras prefers moderate flow.

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

Duplicareus Corydoras can still be rough on plants, but this pairing becomes more realistic when the plant is anchored well and used as part of a larger layout.

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.

Its structure adds useful refuge value beyond the normal visual role of the plant.

The point to watch is substrate activity from the fish means this planting style needs extra anchoring at first.

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

Duplicareus Corydoras is a catfish, 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 Duplicareus Corydoras 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: Substrate activity from the fish means this planting style needs extra anchoring at first.