TankBud

One species · 4 forms

Cryptocoryne spiralis

Also known as Spiralis crypt, Cryptocoryne spiralis var. spiralis, Indian crypt

FreshwaterRosetteRunnersRhizome division

Cryptocoryne spiralis (Cryptocoryne spiralis)
Aquarium Plants Factory · Used with permission

Care at a glance

Light
Low light
CO2
No CO₂ needed
Temperature
72–82°F
22–28°C
Max height
13.8 in
35 cm
Growth rate
Medium
Placement
Background
Type
Rosette
pH
6.0–7.5
Hardness
4–18 dGH
Spread
5.9 in (15 cm)
Nutrient uptake
Root + water column
Growth region
Submersed or emersed
Difficulty
Easy
Family
Araceae
Origin
India

Pick a form

One setup covers every form on this page.

The vallisneria of crypts

Instead of the low rosette most crypts make, spiralis sends up long, twisted strap leaves and spreads by runners under the substrate. It fills a background the same way vallisneria does, just more slowly and with the crypt family's tolerance for low light and hard water.

Same melt rules as every crypt

Expect the usual transplant melt when it goes into a new tank: leaves dissolve, roots live, and fresh growth suited to your water follows. Feed the substrate with root tabs and leave the crowns alone; established stands shrug off changes that flatten fussier plants.

Overview

A grassy, narrow-leaved crypt for the background or midground that throws out runners freely once settled, so a single plant becomes a clump. It is genuinely undemanding: low light is fine, no CO2 is needed, and in a stocked tank the fish waste often covers its nutrient needs, though it feeds through its roots so rich substrate or root tabs help. Keep flow gentle since strong current can tatter the thin leaves, and expect the usual crypt melt after planting before it re-grows from the roots.

In the wild

Native to southern India and Bangladesh, where it grows on riverbanks, in temporarily flooded wetlands and in rice paddies. In the paddies it is treated as a weed because it spreads so readily. It alternates between submersed and emersed growth as seasonal water levels rise and fall.

Good to know

Cryptocoryne spiralis is one of the few crypts native to mainland India rather than Sri Lanka or Southeast Asia, and it has several varieties (such as var. caudigera). It is in the family Araceae and reproduces sexually by spathe, but in the hobby it multiplies mostly by abundant runners.

Did you know

In Indian rice paddies spiralis is considered a nuisance weed, the same vigor that makes it frustrating for farmers makes it one of the easier, faster-spreading crypts in an aquarium.

Common questions

How tall does spiralis get?

Most forms reach 25 to 40 cm, which is background height in all but the largest tanks. The leaves arch over at the surface rather than stopping.

Does it spread?

Yes, steadily, by runners. A few crowns become a stand over a season; it stays manageable and pulls up cleanly where you do not want it.

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