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Willis's Cryptocoryne
Cryptocoryne x willisii
Also known as Willisii Crypt, Nevillii Crypt, Cryptocoryne nevillii
Plantae›Tracheophyta›Magnoliopsida›Alismatales›Araceae
📍 Sri Lanka
One of the smallest and most versatile cryptocorynes — stays compact even in high light. Deep green, slightly wavy leaves. Perfect low-maintenance foreground or midground plant that spreads via runners.
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Compatible Livestock
Algae-eating fish that won't uproot or damage delicate cryptocoryne leaves
Peaceful invertebrates that graze algae without harming plants; thrive in same low-light conditions
Complementary foreground plant with similar low-light tolerance and nutrient requirements
Hardy companion plant with identical care needs; creates layered foreground aesthetic
Small, gentle fish that won't disturb substrate or uproot runners
Efficient algae control without damaging plant tissue; compatible water parameters
Common Diseases
Cryptocoryne Rot
Leaves turn translucent, mushy stems, foul odor from substrate; often follows sudden parameter changes or poor water circulation
Improve water circulation, perform 30-50% water changes, remove affected leaves, ensure substrate isn't compacted; may require replanting in fresh substrate
Nutrient Deficiency
Yellowing or pale leaves, stunted growth, leaf holes; indicates lack of macronutrients or micronutrients
Dose all-in-one liquid fertilizer weekly; add root tabs if substrate lacks nutrients; ensure adequate lighting for photosynthesis
Algae Overgrowth on Leaves
Green or brown algae coating leaf surfaces, reduced light penetration to plant tissue
Reduce photoperiod to 6-8 hours daily, increase water circulation, add algae-eating fish or shrimp, manually remove visible algae with soft brush
Melting
Rapid leaf dissolution after planting, usually within 1-2 weeks of introduction
This is normal emersed-to-submersed transition; maintain stable parameters, ensure good water flow, and be patient—new submersed leaves will emerge within 2-4 weeks
Tips from the community 💡
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Quick Facts
- CO2
- not needed
- lighting
- low–medium
- maxHeight
- 5–10 cm (2–4 in)
- placement
- foreground/midground
- substrate
- nutrient-rich
Water it likes
- ph
- 6.0–7.5
- hardness
- 2–15 dGH
- temperature
- 72–82°F (22–28°C)
Legality
No state or federal restrictions on record for this species.
Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.