Back to Japanese Cress fish guides

Is Japanese Cress a Good Plant for Orange Peacock?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Japanese Cress is not recommended for Orange Peacock. The issue is practical, not cosmetic: orange Peacock is likely to uproot this plant while digging through the substrate.

Japanese Cress

Cardamine lyrata

View plant profile
PlacementMidground
LightModerate
DifficultyIntermediate
Size40 × 15 cm

Orange Peacock

Aulonocara stuartgranti maleri

View fish profile
TemperamentSemi-Aggressive
FamilyCichlids - African
Temp24–28°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

The fish is likely to outgrow, uproot, or out-pressure the plant.

Water match

Workable overlap

Shared range: 24-24°C, pH 7.8-8, 10-15 dGH.

Plant pressure

High

Orange Peacock may chew, uproot, or stress this plant.

Layout value

Moderate cover

Japanese Cress helps with good refuge for fry 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
Japanese Cress15-24°C
Orange Peacock24-28°C

Overlap: 24-24°C.

pH
Japanese Cress6-8
Orange Peacock7.8-8.6

Overlap: pH 7.8-8.

Hardness
Japanese Cress4-15 dGH
Orange Peacock10-25 dGH

Overlap: 10-15 dGH.

Water and flow
Japanese CressFreshwater Only, Moderate (Standard)
Orange PeacockFreshwater Only, Moderate (Standard)

Flow expectations are close enough for one layout.

Space used
Japanese CressMidground and Background
Orange PeacockBottom (Substrate) and Middle (Open Water)
Pressure signals
Japanese CressLow uproot resistance, Delicate leaves
Orange PeacockSemi-Aggressive, Digger (Disturbs Substrate)

Plant pressure: High.

Planting value
Japanese CressGood refuge for fry and Breaks lines of sight, Inert substrate is fine
Orange PeacockSand (Sifters) and Smooth Gravel (Sensitive Barbels)

Shared Tank Conditions

Japanese Cress fits inside the water range normally used for Orange Peacock. The shared window is about 24 to 24 °C, pH 7.8 to 8, and 10 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.

Fish Pressure and Plant Resilience

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

Japanese Cress has moderate cover density, low uproot resistance, and delicate leaves. It can also help with fry refuge and breaking up sight lines.

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

The limiting issue is orange Peacock is likely to uproot this plant while digging through the substrate.

Layout Fit

Japanese Cress is a stem plant usually used midground and background.

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

Japanese Cress reaches about 40 cm tall by 15 cm wide and is usually rooted in substrate with inert substrate is fine. 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 fry refuge and line-of-sight breaks. Place it where Orange Peacock can actually use that structure instead of hiding the plant where it cannot do much.

Practical Recommendation

For most keepers, a tougher or better-matched plant is the smarter choice. If you still try it, test with a small amount first and be ready to move the plant before it is badly damaged.

The decision should center on this signal: Orange Peacock is likely to uproot this plant while digging through the substrate.

Best Use Case

Japanese Cress is usually the wrong plant for Orange Peacock if your goal is a stable display tank. The issue is rarely one dramatic failure on day one; it is the steady mismatch between what the fish does in the scape and what the plant needs to stay attractive long term.

Frequently Asked Questions About Japanese Cress and Orange Peacock

Is Japanese Cress a good plant for Orange Peacock?

Japanese Cress is not recommended for Orange Peacock. The issue is practical, not cosmetic: orange Peacock is likely to uproot this plant while digging through the substrate.

Can Orange Peacock damage Japanese Cress?

Orange Peacock is likely to uproot this plant while digging through the substrate.

Do Japanese Cress and Orange Peacock share the same water conditions?

Japanese Cress and Orange Peacock share a workable water window around 24 to 24 °C, pH 7.8 to 8, and 10 to 15 dGH. Keep the tank near the middle of that overlap for the best long-term result.

What does Japanese Cress add to a tank with Orange Peacock?

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

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

Orange Peacock is likely to uproot this plant while digging through the substrate.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 7, 2026
Last updated
May 7, 2026
Issues or corrections?
Contact the editorial team

Other Fish for Japanese Cress

Other Plants for Orange Peacock