Is Undulata a Good Plant for Palmas Bichir?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026

Strong Fit

Undulata is a strong fit for Palmas Bichir. The shared water window is realistic, and the plant has enough structure or resilience to be useful in a tank built around this fish. Fish pressure is low, so the plant can be judged mostly on water match, cover value, and layout role.

Undulata

Cryptocoryne undulata

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PlacementMidground

LightLow

DifficultyBeginner

Size25 × 20 cm

Palmas Bichir

Polypterus palmas palmas

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TemperamentSemi-Aggressive

FamilyOddballs

Temp24–29°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

100/100

The plant and fish suit each other well.

Water match

Workable overlap

Shared range: 24-28°C, pH 6.5-7.5, 5-15 dGH.

Plant pressure

Low

Palmas Bichir is not flagged as unusually hard on this plant.

Layout value

Moderate cover

Undulata helps with breaks lines of sight, good refuge for shrimp, and good grazing surface.

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.

FactorUndulataPalmas Bichir

Temperature

Undulata20-28°C

Palmas Bichir24-29°C

Overlap: 24-28°C.

Undulata6-8

Palmas Bichir6.5-7.5

Overlap: pH 6.5-7.5.

Hardness

Undulata2-15 dGH

Palmas Bichir5-15 dGH

Overlap: 5-15 dGH.

Water and flow

UndulataFreshwater Only, Low (Still Water)

Palmas BichirFreshwater Only, Low (Still Water)

Flow expectations are close enough for one layout.

Space used

UndulataMidground and Background

Palmas BichirBottom (Substrate)

Pressure signals

UndulataHigh uproot resistance, Standard leaves

Palmas BichirSemi-Aggressive, Piscivore (Eats small/nano fish), Shrimp Eater, and Jumper (Lid Required)

Plant pressure: Low.

Planting value

UndulataBreaks lines of sight, Good refuge for shrimp, and Good grazing surface, Nutrient-rich substrate preferred

Palmas BichirSand (Sifters), Driftwood (Digestion/Hiding), and Smooth Gravel (Sensitive Barbels)

Shared Tank Conditions

Undulata fits inside the water range normally used for Palmas Bichir. The shared window is about 24 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.

Both do best with gentle, low-flow water, 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

Palmas Bichir does not put unusual pressure on this plant compared with harder fish-plant combinations.

Undulata has moderate cover density, high uproot resistance, and standard leaves. It can also help with breaking up sight lines, 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.

Layout Fit

Undulata is a rosette / crown plant usually used midground and background.

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

Undulata reaches about 25 cm tall by 20 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 line-of-sight breaks, shrimp refuge, and grazing surfaces. Place it where Palmas Bichir can actually use that structure instead of hiding the plant where it cannot do much.

Practical Recommendation

This is a sensible planted-tank choice for Palmas Bichir, 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 Palmas Bichir actually swims, shelters, or uses cover.

Best Use Case

Undulata is a strong choice for Palmas Bichir when you want the plant to do real work in the tank, not just survive in the background. The pairing tends to perform best when the plant's cover, resilience, or placement naturally supports how the fish moves, hides, or claims space.

Frequently Asked Questions About Undulata and Palmas Bichir

Is Undulata a good plant for Palmas Bichir?

Can Palmas Bichir damage Undulata?

Undulata is not especially vulnerable in this pairing compared with softer or more lightly rooted plants. Its standard leaves and high uproot resistance are the useful signals to watch.

Undulata and Palmas Bichir share a workable water window around 24 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 Undulata add to a tank with Palmas Bichir?

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?

The main risk is assuming one plant can solve every layout need. Fish still need the right hardscape, open swimming room, and cover density for their normal behaviour.