Cryptocoryne parva is the smallest Cryptocoryne species, a slow‑growing foreground aquarium plant native to Sri Lanka that thrives in medium–high light and stable conditions. It stays very short, spreads slowly by runners, and is prized for nano aquascapes where a compact, low‑maintenance plant is needed.
Scientific name: Cryptocoryne parva de Wit
Family: Araceae
Origin: Central highlands of Sri Lanka, especially near Kandy.
Size: Typically 2–6 cm tall, making it the smallest known Cryptocoryne.
Growth form: A small rosette with narrow, grass‑green leaves; emersed leaves are slightly wider.
Growth rate: Very slow, even under ideal conditions.
Medium to high light is recommended; the plant can lose leaf surface underwater if shaded.
Must not be overshadowed by taller plants.
Temperature: 22–28°C (72–82°F)
pH: 5.0–8.0
Hardness: Very soft to hard
CO₂: Not required, though optional CO₂ can improve growth.
Grows in any substrate, including inert sand, but benefits from nutrient‑rich substrate or root tabs.
Nutrition capsules in the bottom layer help development.
Best used as a foreground plant in aquascapes.
Plant individual rosettes a few centimeters apart; they will form a cohesive patch over months.
Works well in nano tanks and detailed scapes around rocks and wood.
Spreads slowly via runners and side shoots from the rhizome.
Extremely slow growth means patience is essential.
Performs better in established aquariums rather than newly set‑up tanks.
Avoid sudden parameter changes to prevent “crypt melt,” a common issue with Cryptocoryne species.
Cryptocoryne parva has been collected only rarely in recent years in Sri Lanka and may be considered potentially threatened in the wild.
