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Is Vesuvius Sword a Good Plant for Olga Cory?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Strong Fit

Vesuvius Sword is a strong fit for Olga Cory. The shared water window is realistic, and the plant has enough structure or resilience to be useful in a tank built around this fish. The match depends on anchoring and placement more than the water numbers alone.

Vesuvius Sword

Helanthium bolivianum

View plant profile
PlacementMidground
LightModerate
DifficultyIntermediate
Size25 × 10 cm

Olga Cory

Corydoras simulatus

View fish profile
TemperamentPeaceful
FamilyCatfish
Temp20–25°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

84/100

The plant and fish suit each other well.

Water match

Workable overlap

Shared range: 20-25°C, pH 6-7.5, 2-12 dGH.

Plant pressure

Moderate

Vesuvius Sword needs thoughtful placement and anchoring.

Layout value

Moderate cover

Vesuvius Sword helps with breaks lines of sight and good refuge for fry.

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
Vesuvius Sword20-28°C
Olga Cory20-25°C

Overlap: 20-25°C.

pH
Vesuvius Sword6-7.5
Olga Cory6-7.5

Overlap: pH 6-7.5.

Hardness
Vesuvius Sword2-12 dGH
Olga Cory2-15 dGH

Overlap: 2-12 dGH.

Water and flow
Vesuvius SwordFreshwater Only, Moderate (Standard)
Olga CoryFreshwater Only, Moderate (Standard)

Flow expectations are close enough for one layout.

Space used
Vesuvius SwordMidground and Background
Olga CoryBottom (Substrate)
Pressure signals
Vesuvius SwordModerate uproot resistance, Standard leaves
Olga CoryPeaceful, Hyperactive / Fast Swimmer, Digger (Disturbs Substrate), and Shy / Slow Moving (Easily Stressed)

Plant pressure: Moderate.

Planting value
Vesuvius SwordBreaks lines of sight and Good refuge for fry, Nutrient-rich substrate preferred
Olga CorySand (Sifters) and Smooth Gravel (Sensitive Barbels)

Shared Tank Conditions

Vesuvius Sword fits inside the water range normally used for Olga Cory. The shared window is about 20 to 25 °C, pH 6 to 7.5, and 2 to 12 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

Olga Cory 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.

Vesuvius Sword has moderate cover density, moderate uproot resistance, and standard leaves. It can also help with breaking up sight lines and fry refuge.

It gives Olga Cory useful visual shelter and line-of-sight breaks.

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

Layout Fit

Vesuvius Sword is a stolon / runner plant usually used midground and background.

Olga Cory is a catfish, so the pairing works best when the planting style supports how that fish uses space and cover.

Vesuvius Sword reaches about 25 cm tall by 10 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 and fry refuge. Place it where Olga Cory 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 Olga Cory, especially when you want the plant to do real work as cover, sight-line structure, or habitat detail.

The decision should center on this signal: Substrate activity from the fish means this planting style needs extra anchoring at first.

Best Use Case

Vesuvius Sword is a strong choice for Olga Cory 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 Vesuvius Sword and Olga Cory

Is Vesuvius Sword a good plant for Olga Cory?

Vesuvius Sword is a strong fit for Olga Cory. The shared water window is realistic, and the plant has enough structure or resilience to be useful in a tank built around this fish. The match depends on anchoring and placement more than the water numbers alone.

Can Olga Cory damage Vesuvius Sword?

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

Do Vesuvius Sword and Olga Cory share the same water conditions?

Vesuvius Sword and Olga Cory share a workable water window around 20 to 25 °C, pH 6 to 7.5, and 2 to 12 dGH. Keep the tank near the middle of that overlap for the best long-term result.

What does Vesuvius Sword add to a tank with Olga Cory?

It gives Olga Cory useful visual shelter and line-of-sight breaks.

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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