Is Quillwort a Good Plant for Silver Arowana?

Quillwort fits inside the water range normally used for Silver Arowana. The shared window is about 24 to 24 °C, pH 6 to 7.5, and 1 to 8 dGH, which gives you enough room to aim for stable middle-ground conditions.

Both do best with moderate flow, 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.

Silver Arowana does not put unusual pressure on this plant compared with harder fish-plant combinations.

Quillwort has low cover density, high uproot resistance, and tough / leathery leaves. It can also help with shrimp refuge and grazing surfaces.

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

There is no special plant-pressure warning here, so solid anchoring and stable husbandry matter more than unusual protection.

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

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

Quillwort reaches about 15 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 shrimp refuge and grazing surfaces. Place it where Silver Arowana can actually use that structure instead of hiding the plant where it cannot do much.

This is a sensible planted-tank choice for Silver Arowana, especially when you want the plant to do real work as cover, sight-line structure, or habitat detail.

The decision should center on layout quality: keep the plant in the zone where Silver Arowana actually swims, shelters, or uses cover.