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Is River Buttercup a Good Plant for Olga Cory?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

River Buttercup is not recommended for Olga Cory. The issue is practical, not cosmetic: olga Cory is likely to uproot this plant while digging through the substrate.

River Buttercup

Ranunculus inundatus

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PlacementForeground
LightHigh
DifficultyIntermediate
Size15 × 20 cm

Olga Cory

Corydoras simulatus

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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

68/100

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

Water match

Workable overlap

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

Plant pressure

High

Olga Cory may chew, uproot, or stress this plant.

Layout value

Moderate cover

River Buttercup helps with good refuge for shrimp, good grazing surface, 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
River Buttercup20-28°C
Olga Cory20-25°C

Overlap: 20-25°C.

pH
River Buttercup6-7.5
Olga Cory6-7.5

Overlap: pH 6-7.5.

Hardness
River Buttercup2-12 dGH
Olga Cory2-15 dGH

Overlap: 2-12 dGH.

Water and flow
River ButtercupFreshwater Only, Moderate (Standard)
Olga CoryFreshwater Only, Moderate (Standard)

Flow expectations are close enough for one layout.

Space used
River ButtercupForeground, Carpeting, and Midground
Olga CoryBottom (Substrate)
Pressure signals
River ButtercupLow uproot resistance, Standard leaves
Olga CoryPeaceful, Hyperactive / Fast Swimmer, Digger (Disturbs Substrate), and Shy / Slow Moving (Easily Stressed)

Plant pressure: High.

Planting value
River ButtercupGood refuge for shrimp, Good grazing surface, and Good refuge for fry, Nutrient-rich substrate preferred
Olga CorySand (Sifters) and Smooth Gravel (Sensitive Barbels)

Shared Tank Conditions

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

River Buttercup has moderate cover density, low uproot resistance, and standard leaves. It can also help with shrimp refuge, grazing surfaces, and fry refuge.

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

The limiting issue is olga Cory is likely to uproot this plant while digging through the substrate.

Layout Fit

River Buttercup is a stolon / runner plant usually used foreground, carpeting, and midground.

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

River Buttercup reaches about 15 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 shrimp refuge, grazing surfaces, 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

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: Olga Cory is likely to uproot this plant while digging through the substrate.

Best Use Case

River Buttercup is usually the wrong plant for Olga Cory 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 River Buttercup and Olga Cory

Is River Buttercup a good plant for Olga Cory?

River Buttercup is not recommended for Olga Cory. The issue is practical, not cosmetic: olga Cory is likely to uproot this plant while digging through the substrate.

Can Olga Cory damage River Buttercup?

Olga Cory is likely to uproot this plant while digging through the substrate.

Do River Buttercup and Olga Cory share the same water conditions?

River Buttercup 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 River Buttercup add to a tank with Olga Cory?

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?

Olga Cory 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?
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