• Scientific name: Myriophyllum aquaticum
• Synonym: Myriophyllum brasiliensis; M. proserpinacoides
• Common name: Brazilian milfoil, milfoil
• Family: Halorrhagaceae
• Group: Aquarium plants
• Max height: 60 cm
• Distribution: South America; Brazil, Argentina, Uruguay, Peru, Chile
• Habitat: Edges of small flowing waters, up to an altitude of 1500m
• Substrate: Plain washed gravel
• Placement in aquarium: Background, middleground
• Planting density: 5-6 plants for 20 cm²
• Lighting needs: Bright to strong
• Temperature: 15-20°C
• pH: 5,5-7,5
• Hardness: 3-12NK°

Description: It is important to keep this common aquarium plant in water free of visible debris, which may clog the fine leaves. Providing you regularly add a multipurpose fertilizer to the tank, the plant should do well in most aquariums. It will produce side shoots, but overcutting will damage it. In strong light, the plant may produce thick leaves above the surface. Milfoil does well in softer water with a pH values as low as 5, although it will also do well in water with a pH of about 7,5. Cultivation succeeds best in soft to medium-hard, slightly acid to neutral, not too warm water (10-25°C). Milfoil suitable for planting on the edges of ponds during summer.