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Is Micro Sword a Good Plant for Peacock Eel?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Possible with Caution

Micro Sword can work with Peacock Eel, but this is a possible with caution pairing. The plant may need a protected position, stronger anchoring, or companion plants before it feels reliable in day-to-day use. The match depends on anchoring and placement more than the water numbers alone.

Micro Sword

Lilaeopsis brasiliensis

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PlacementForeground
LightModerate
DifficultyIntermediate
Size7 × 15 cm

Peacock Eel

Macrognathus siamensis

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TemperamentPeaceful
FamilyOddballs
Temp23–28°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

74/100

Possible, but the scape needs more care.

Water match

Workable overlap

Shared range: 23-28°C, pH 6.5-7.5, 5-15 dGH.

Plant pressure

Moderate

Micro Sword needs thoughtful placement and anchoring.

Layout value

High cover

Micro Sword helps with good refuge for shrimp, good refuge for fry, good grazing surface, and useful spawning site.

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
Micro Sword15-28°C
Peacock Eel23-28°C

Overlap: 23-28°C.

pH
Micro Sword6-7.5
Peacock Eel6.5-8

Overlap: pH 6.5-7.5.

Hardness
Micro Sword2-15 dGH
Peacock Eel5-15 dGH

Overlap: 5-15 dGH.

Water and flow
Micro SwordBrackish Tolerant, Moderate (Standard)
Peacock EelFreshwater Only, Low (Still Water)

Flow expectations are close enough for one layout.

Space used
Micro SwordForeground and Carpeting
Peacock EelBottom (Substrate)
Pressure signals
Micro SwordHigh uproot resistance, Tough / leathery leaves
Peacock EelPeaceful, Digger (Disturbs Substrate), Jumper (Lid Required), and Nocturnal

Plant pressure: Moderate.

Planting value
Micro SwordGood refuge for shrimp, Good refuge for fry, Good grazing surface, and Useful spawning site, Nutrient-rich substrate preferred
Peacock EelSand (Sifters), Smooth Gravel (Sensitive Barbels), and Plants - Densely covered

Shared Tank Conditions

Micro Sword fits inside the water range normally used for Peacock Eel. The shared window is about 23 to 28 °C, pH 6.5 to 7.5, and 5 to 15 dGH, which gives you enough room to aim for stable middle-ground conditions.

Their flow expectations are close enough to combine: Micro Sword prefers moderate flow, while Peacock Eel prefers gentle, low-flow water.

Water type can work if the tank stays in the shared part of freshwater to lightly brackish water and freshwater conditions.

Fish Pressure and Plant Resilience

Peacock Eel 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.

Micro Sword has high cover density, high uproot resistance, and tough / leathery leaves. It can also help with shrimp refuge, fry refuge, grazing surfaces, and spawning sites.

This plant adds the denser cover that Peacock Eel usually appreciates.

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

Layout Fit

Micro Sword is a stolon / runner plant usually used foreground and carpeting.

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

Micro Sword reaches about 7 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, fry refuge, grazing surfaces, and spawning sites. Place it where Peacock Eel can actually use that structure instead of hiding the plant where it cannot do much.

Practical Recommendation

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.

Best Use Case

Micro Sword can work with Peacock Eel, 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.

Frequently Asked Questions About Micro Sword and Peacock Eel

Is Micro Sword a good plant for Peacock Eel?

Micro Sword can work with Peacock Eel, but this is a possible with caution pairing. The plant may need a protected position, stronger anchoring, or companion plants before it feels reliable in day-to-day use. The match depends on anchoring and placement more than the water numbers alone.

Can Peacock Eel damage Micro Sword?

Substrate activity from the fish means this planting style needs extra anchoring at first.

Do Micro Sword and Peacock Eel share the same water conditions?

Micro Sword and Peacock Eel share a workable water window around 23 to 28 °C, pH 6.5 to 7.5, and 5 to 15 dGH. Keep the tank near the middle of that overlap for the best long-term result.

What does Micro Sword add to a tank with Peacock Eel?

This plant adds the denser cover that Peacock Eel usually appreciates.

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

Substrate activity from the fish means this planting style needs extra anchoring at first.

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
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