Aquatic Stem Plant Alternanthera Reineckii for Ruby-Red Freshwater Midground or Background Aquascapes

Bring lasting red and magenta contrast to a freshwater aquascape using Alternanthera Reineckii, a classic stem plant suited to both newer and experienced keepers. Its upright growth works as a colorful midground centerpiece or a fuller background hedge.

Broad leaves grow in opposing pairs along stems, creating dense foliage that gives dwarf shrimp and shy fish welcome shelter. Medium-to-high light, regular fertilization, pressurized CO2, and stable water conditions support healthy growth and stronger coloration.

Key Features

• This beginner-friendly red stem plant retains rich coloration more readily than many traditional high-demand red plants, making a vivid planted layout easier to maintain.
• Dense foliage provides shelter for dwarf shrimp and shy fish, adding useful cover as well as bold color to the aquarium.
• A mature height of 4–12 inches or more allows flexible placement as either a midground focal point or a background hedge.
• Moderate-to-fast growth supports expanding displays; trim the main stem tops and replant the cuttings to increase coverage.
• Plants may arrive in emersed or submerged form depending on nursery availability and season, so keep conditions stable while new underwater growth adapts.
• Spacing individual stems slightly apart allows light to reach lower leaves, supporting a healthier, less crowded stand.

Specifications

• Scientific name: Alternanthera reineckii
• Common names: Alternanthera Reineckii, AR, Red Leaf Alternanthera
• Family: Amaranthaceae
• Plant type: Stem plant
• Care difficulty: Easy to moderate
• Light requirement: Medium to high
• CO2 requirement: Required for optimal coloration and fast growth
• Placement: Midground or background
• Height: 4–12 inches or more
• Growth rate: Moderate to fast
• Water pH: 6.5–7.5
• Propagation: Cut the stem and replant the top
• Planting depth: 1–2 inches into substrate
• Origin: Central and South America
• Available variants: Lead Bunch; 3 Bunches + 1 Free

Plant stems individually in substrate, keep lighting and water conditions steady, and trim at the preferred height to shape a rich red aquarium planting.