Back to Undulata fish guides

Is Undulata a Good Plant for Silver Flying Fox?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Not Recommended

Undulata is not recommended for Silver Flying Fox. The issue is practical, not cosmetic: the fish wants a very different current pattern than the plant prefers.

Undulata

Cryptocoryne undulata

View plant profile
PlacementMidground
LightLow
DifficultyBeginner
Size25 × 20 cm

Silver Flying Fox

Crossocheilus reticulatus

View fish profile
TemperamentMostly Peaceful
FamilyCyprinids
Temp20–26°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

80/100

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

Water match

Workable overlap

Shared range: 20-26°C, pH 6-7.5, 2-15 dGH.

Plant pressure

Low

Silver Flying Fox 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.

Temperature
Undulata20-28°C
Silver Flying Fox20-26°C

Overlap: 20-26°C.

pH
Undulata6-8
Silver Flying Fox6-7.5

Overlap: pH 6-7.5.

Hardness
Undulata2-15 dGH
Silver Flying Fox2-15 dGH

Overlap: 2-15 dGH.

Water and flow
UndulataFreshwater Only, Low (Still Water)
Silver Flying FoxFreshwater Only, High (River/Stream)

Flow expectations point in different directions.

Space used
UndulataMidground and Background
Silver Flying FoxBottom (Substrate) and Middle (Open Water)
Pressure signals
UndulataHigh uproot resistance, Standard leaves
Silver Flying FoxMostly Peaceful, Hyperactive / Fast Swimmer, Jumper (Lid Required), and Aggressive to same species/look-alikes

Plant pressure: Low.

Planting value
UndulataBreaks lines of sight, Good refuge for shrimp, and Good grazing surface, Nutrient-rich substrate preferred
Silver Flying FoxEstablished Algae (Otocinclus), Smooth Gravel (Sensitive Barbels), and Driftwood (Digestion/Hiding)

Shared Tank Conditions

Undulata fits inside the water range normally used for Silver Flying Fox. The shared window is about 20 to 26 °C, pH 6 to 7.5, and 2 to 15 dGH, which gives you enough room to aim for stable middle-ground conditions.

Flow is another friction point because Undulata prefers gentle, low-flow water while Silver Flying Fox prefers strong, stream-style flow.

Both are suited to freshwater, so salinity does not add an extra planning problem.

Fish Pressure and Plant Resilience

Silver Flying Fox 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.

The limiting issue is the fish wants a very different current pattern than the plant prefers.

Layout Fit

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

Silver Flying Fox is a cyprinid, 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 Silver Flying Fox 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: The fish wants a very different current pattern than the plant prefers.

Best Use Case

Undulata is usually the wrong plant for Silver Flying Fox 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 Undulata and Silver Flying Fox

Is Undulata a good plant for Silver Flying Fox?

Undulata is not recommended for Silver Flying Fox. The issue is practical, not cosmetic: the fish wants a very different current pattern than the plant prefers.

Can Silver Flying Fox damage Undulata?

The fish wants a very different current pattern than the plant prefers.

Do Undulata and Silver Flying Fox share the same water conditions?

Undulata and Silver Flying Fox share a workable water window around 20 to 26 °C, pH 6 to 7.5, and 2 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 Silver Flying Fox?

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 fish wants a very different current pattern than the plant prefers.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 11, 2026
Last updated
May 11, 2026
Issues or corrections?
Contact the editorial team

Other Fish for Undulata

Other Plants for Silver Flying Fox