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Fine-leaved Pondweed
Potamogeton gayi
Plantae›Tracheophyta›Magnoliopsida›Alismatales›Potamogetonaceae
📍 South America & Europe
Elegant plant with very fine, grass-like submerged leaves. Creates a soft, wispy texture perfect for natural-style aquascapes. Tolerates cool water well and can be used in temperate tanks.
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Compatible Livestock
Gentle algae grazers that won't damage delicate foliage and benefit from the plant's shelter
Small, non-destructive shrimp that graze on biofilm without harming fine leaves
Peaceful small fish that appreciate the plant's cover without uprooting or consuming it
Algae-eating fish that respect plant structure and help maintain tank cleanliness
Compatible foreground plant with similar nutrient requirements and non-competitive growth
Low-light companion plant that complements the fine-leaved texture in midground/background layouts
Common Diseases
Nutrient Deficiency
Yellowing leaves, stunted growth, pale coloration, leaf holes or transparent patches
Increase liquid fertilizer dosing, verify CO2 levels are adequate (30-40 ppm), and ensure substrate contains nutrients. Test water parameters and adjust macro/micronutrient balance accordingly
Algae Overgrowth
Green, brown, or black algae coating leaves; reduced light penetration; plant appears smothered
Reduce lighting duration to 8-10 hours daily, increase water changes (25-30% weekly), add algae-eating shrimp or fish, and ensure CO2 and nutrient balance favor plant growth over algae
Melting (Tissue Decay)
Leaves become translucent, mushy, or dissolve; plant appears to shrink rapidly
Improve water quality with frequent partial water changes, verify temperature is within 23-28°C, increase CO2 and lighting gradually, and remove severely damaged portions to prevent rot spread
Poor Growth
Minimal new leaf development, leaves remain small, plant appears stalled
Confirm lighting is medium-high (8-10 hours daily), increase CO2 supplementation, boost fertilizer dosing, and ensure substrate is nutrient-rich; allow 4-6 weeks for recovery
Tips from the community 💡
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Quick Facts
- CO2
- recommended
- lighting
- medium–high
- maxHeight
- 20–40 cm (8–16 in)
- placement
- midground/background
- substrate
- nutrient-rich