Is Afzel's Anubias a Good Plant for Black Ghost Knifefish?

Afzel's Anubias fits inside the water range normally used for Black Ghost Knifefish. The shared window is about 23 to 28 °C, pH 6 to 8, and 5 to 15 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.

Black Ghost Knifefish does not put unusual pressure on this plant compared with harder fish-plant combinations.

Afzel's Anubias has moderate cover density, high uproot resistance, and tough / leathery leaves. It can also help with breaking up sight lines, spawning sites, grazing surfaces, and shrimp refuge.

It gives Black Ghost Knifefish useful visual shelter and line-of-sight breaks.

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

Afzel's Anubias is a rhizome / epiphyte plant usually used midground, background, and attached to hardscape.

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

Afzel's Anubias reaches about 35 cm tall by 25 cm wide and is usually roots anchored, rhizome exposed with no substrate required. 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, spawning sites, grazing surfaces, and shrimp refuge. Place it where Black Ghost Knifefish can actually use that structure instead of hiding the plant where it cannot do much.

This is a sensible planted-tank choice for Black Ghost Knifefish, 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 Black Ghost Knifefish actually swims, shelters, or uses cover.