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Is Crystalwort a Good Plant for Pacific Sturgeon?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Crystalwort is not recommended for Pacific Sturgeon. The issue is practical, not cosmetic: the fish wants a very different current pattern than the plant prefers.

Crystalwort

Riccia fluitans

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PlacementFloating
LightModerate
DifficultyBeginner
Size5 × 15 cm

Pacific Sturgeon

Acipenser transmontanus

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TemperamentMostly Peaceful
FamilyOddballs
Temp10–22°C
Water TypeBrackish Tolerant

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: 15-22°C, pH 6.5-8, 4-15 dGH.

Plant pressure

Low

Pacific Sturgeon is not flagged as unusually hard on this plant.

Layout value

High cover

Crystalwort helps with provides surface cover, good refuge for fry, good refuge for shrimp, 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
Crystalwort15-30°C
Pacific Sturgeon10-22°C

Overlap: 15-22°C.

pH
Crystalwort6-8
Pacific Sturgeon6.5-8

Overlap: pH 6.5-8.

Hardness
Crystalwort2-15 dGH
Pacific Sturgeon4-20 dGH

Overlap: 4-15 dGH.

Water and flow
CrystalwortFreshwater Only, Low (Still Water)
Pacific SturgeonBrackish Tolerant, High (River/Stream)

Flow expectations point in different directions.

Space used
CrystalwortFloating
Pacific SturgeonBottom (Substrate)
Pressure signals
CrystalwortLow uproot resistance, Delicate leaves
Pacific SturgeonMostly Peaceful, Piscivore (Eats small/nano fish), Digger (Disturbs Substrate), and Hyperactive / Fast Swimmer

Plant pressure: Low.

Planting value
CrystalwortProvides surface cover, Good refuge for fry, Good refuge for shrimp, and Useful spawning site, No substrate required
Pacific SturgeonSand (Sifters) and Smooth Gravel (Sensitive Barbels)

Shared Tank Conditions

Crystalwort fits inside the water range normally used for Pacific Sturgeon. The shared window is about 15 to 22 °C, pH 6.5 to 8, and 4 to 15 dGH, which gives you enough room to aim for stable middle-ground conditions.

Flow is another friction point because Crystalwort prefers gentle, low-flow water while Pacific Sturgeon prefers strong, stream-style flow.

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

Fish Pressure and Plant Resilience

Pacific Sturgeon does not put unusual pressure on this plant compared with harder fish-plant combinations.

Crystalwort has high cover density, low uproot resistance, and delicate leaves. It can also help with surface cover, fry refuge, shrimp refuge, and spawning sites.

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

Crystalwort is a moss / liverwort usually used floating.

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

Crystalwort reaches about 5 cm tall by 15 cm wide and is usually free-floating with no substrate required. 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 surface cover, fry refuge, shrimp refuge, and spawning sites. Place it where Pacific Sturgeon 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

Crystalwort is usually the wrong plant for Pacific Sturgeon 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 Crystalwort and Pacific Sturgeon

Is Crystalwort a good plant for Pacific Sturgeon?

Crystalwort is not recommended for Pacific Sturgeon. The issue is practical, not cosmetic: the fish wants a very different current pattern than the plant prefers.

Can Pacific Sturgeon damage Crystalwort?

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

Do Crystalwort and Pacific Sturgeon share the same water conditions?

Crystalwort and Pacific Sturgeon share a workable water window around 15 to 22 °C, pH 6.5 to 8, and 4 to 15 dGH. Keep the tank near the middle of that overlap for the best long-term result.

What does Crystalwort add to a tank with Pacific Sturgeon?

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 7, 2026
Last updated
May 7, 2026
Issues or corrections?
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