Pest identification
What's eating my rotala nanjenshan?
Algae (thread algae, fuzz algae)
Signs: Fine strands wrap around needle leaves making manual removal destructive; growth stalls
Control: Boost CO2 and flow over the plant, trim and discard heavily infested stems, add Amano shrimp or SAE
Pest snails (bladder snails, ramshorn snails)
Signs: Rasping on leaflets causes browning and tip die-back on tender new growth
Control: Population control via assassin snails or loaches; reduce organic waste that sustains snail colonies
Herbivorous fish (goldfish, Buenos Aires tetras, large barbs)
Signs: Fine foliage rapidly consumed; plant can be destroyed in days by the wrong tank mates
Control: Keep strictly with plant-safe species; remove any fish observed grazing immediately
Aphids (emersed/paludarium growth only)
Signs: Colonies on exposed stem tips cause yellowing and wilting of fine leaves above waterline
Control: Submerge affected stems to drown aphids or treat with insecticidal soap; rinse before submerging
Keep rotala nanjenshan pest-free
Healthy plants resist pests best. Get the basics right:
Rotala nanjenshan pests — FAQ
What is eating my rotala nanjenshan?
Rotala nanjenshan is a fine-leaved stem plant particularly prone to algae entanglement in its delicate foliage. Pest snails and opportunistic grazers can damage it, and herbivorous fish consume it readily. Its fine leaves also collect debris under low flow. Good flow, stable CO2 and regular trimming are the primary defences.
How do I get rid of algae (thread algae, fuzz algae) on rotala nanjenshan?
Fine strands wrap around needle leaves making manual removal destructive; growth stalls Boost CO2 and flow over the plant, trim and discard heavily infested stems, add Amano shrimp or SAE
How do I get rid of pest snails (bladder snails, ramshorn snails) on rotala nanjenshan?
Rasping on leaflets causes browning and tip die-back on tender new growth Population control via assassin snails or loaches; reduce organic waste that sustains snail colonies
How do I get rid of herbivorous fish (goldfish, buenos aires tetras, large barbs) on rotala nanjenshan?
Fine foliage rapidly consumed; plant can be destroyed in days by the wrong tank mates Keep strictly with plant-safe species; remove any fish observed grazing immediately
How do I get rid of aphids (emersed/paludarium growth only) on rotala nanjenshan?
Colonies on exposed stem tips cause yellowing and wilting of fine leaves above waterline Submerge affected stems to drown aphids or treat with insecticidal soap; rinse before submerging