Aquarium Plant Coexistence Guides

A very popular and hardy grass-like aquarium plant, often used for foregrounds and midgrounds. It reproduces rapidly via runners to form a dense carpet. While typically staying short, it can grow taller in crowded conditions or under very low light.

A beautiful bulbous plant known for its arrow-shaped to rounded leaves and striking red, pink, or green foliage in the aquarium. It will eagerly send lily pads to the surface if allowed, which provides excellent shade and cover, but it can be trained to stay submerged and bushy by regularly trimming the floating surface leaves.

Salvinia natans is a fast-growing, rootless floating fern characterized by small, oval leaves covered in water-repellent hairs. It is excellent for absorbing excess nutrients from the water column and providing a secure canopy for shy fish and fry, but it requires regular culling to prevent it from completely blocking light to submerged plants.

A fast-growing, adaptable fern that thrives when floated on the water surface. It produces broad, lobed leaves and dense trailing root systems that provide excellent cover for fry, shrimp, and shy inhabitants, while heavily reducing excess nutrients in the water column.

Micranthemum umbrosum, commonly known as Giant Baby Tears, is a fast-growing stem plant characterized by delicate, round, bright green leaves. When provided with strong lighting and CO2 supplementation, it forms dense bushes ideal for the midground or background. It requires frequent trimming to prevent the dense upper growth from shading out its own lower stems, which can lead to leaf loss and stem rot at the base.

A towering rosette plant originating from the Philippines, Cryptocoryne usteriana is highly valued for its long, deeply dimpled (bullate) leaves that often feature striking burgundy undersides. Because it thrives in harder, alkaline water and possesses tough foliage, it is one of the few plants perfectly suited for African cichlid aquariums. As it matures, its massive leaves reach the water's surface and gracefully drape across it, creating a natural canopy and casting significant shade over the aquarium.

A fast-growing floating plant that is significantly larger than common duckweed (Lemna minor). It is easily identified by its distinct reddish-purple undersides and a cluster of multiple roots dangling from each frond. It is excellent for natural nutrient export and shading, though it requires frequent culling to prevent it from completely blocking light to underlying plants.

Giant Hairgrass is a tall, grass-like aquatic plant native to North and South America. It produces long, thin, bright green stalks that provide excellent vertical lines and background coverage in aquascapes. It propagates via lateral runners to form dense clusters.

Rotala macrandra is a stunning, but highly demanding, stem plant known for its large, undulating, brightly colored leaves. To achieve its signature vibrant red coloration and prevent stunting or leaf melting, it requires intense lighting, strictly managed CO2 injection, and a robust nutrient dosing regimen.

Giant Sagittaria is a robust, grass-like plant that features relatively broad, strap-shaped submerged leaves. It spreads via underground runners to form dense clusters. Often used as a background plant in smaller aquariums or a midground accent in larger setups, it is highly adaptable and makes an excellent choice for beginners.

A highly prolific floating fern known for its thick, folded leaves covered in unique egg-beater shaped hairs that make the plant intensely water-repellent. While excellent at taking up excess nutrients and providing protective cover for fry and shrimp, it grows extremely fast and requires frequent scooping to prevent it from completely suffocating the water surface and blocking all light.

Anubias gilletii is a relatively large and robust epiphyte from West Africa. Known for its broad, somewhat elongated leaves and sturdy stems, it makes an excellent midground to background accent when attached to hardscape. Like most Anubias species, it is highly adaptable, very slow-growing, and features tough leaves that resist herbivorous fish.

Glossostigma elatinoides, commonly known as Glosso, is a classic and highly popular aquarium carpeting plant native to the swamps and bogs of Australia and New Zealand. Prized for its ability to form a dense, bright green mat along the aquarium floor, it is often a centerpiece in high-tech nature aquariums. It is a demanding plant that requires intense lighting and carbon dioxide supplementation to creep horizontally; without these, it tends to grow leggy and vertical. Frequent trimming is necessary to prevent the carpet from overgrowing itself, which can lead to the lower layers dying off and the mat detaching from the substrate.

Nesaea crassicaulis, now often classified as Ammannia crassicaulis, is a striking African stem plant known for its thick stems and beautiful golden-orange to deep red foliage. It is a demanding species that requires high light intensity, regular nutrient dosing (particularly iron and micronutrients), and carbon dioxide supplementation to prevent stunting and achieve its vibrant colors. When grown well, it forms an excellent focal point in the midground or background of the aquascape.

Limnophila hippuridoides is a striking stem plant known for its vivid purplish-red leaves and dense, whorled growth pattern. When grown under optimal lighting and CO2, its vibrant undersides provide excellent contrast in the aquascape. The emersed form is notable for emitting a strong, pleasant pine-like or lavender fragrance when the leaves are crushed.

A classic, fine-leaved stem plant that provides excellent refuge for fry and creates a densely textured, fluffy backdrop. It is strictly aquatic and requires high light, clean water, and good nutrient availability to prevent the lower leaves from detaching or melting.

A relatively compact water lily from South America featuring bright green, slightly ruffled underwater leaves. It stays smaller than the popular Tiger Lotus, making it an excellent centerpiece for midground or background placement in aquariums. Like most lilies, it is a heavy root feeder that thrives in nutrient-rich substrates. To maintain a bushy, submerged growth form, any leaves that attempt to reach the surface should be pruned regularly.

Najas guadalupensis, widely known as Guppy Grass, is an extremely fast-growing and undemanding aquatic plant. It forms dense tangles that provide exceptional hiding spaces for fry and shrimp. While it can be planted loosely in the substrate, it is most frequently used as a free-floating plant in breeding or low-tech setups. Its stems are very delicate and break easily, but every fragment will quickly grow into a new plant.

Hemianthus callitrichoides, commonly known as HC Cuba or Dwarf Baby Tears, is one of the smallest-leaved aquarium plants available. It forms dense, vibrant green carpets in the foreground of aquariums, spreading via runners. Originally from Cuba, it is a demanding plant that, when thriving, can produce visible oxygen pearls (pearling) on its leaves.

An incredibly fast-growing, fully aquatic, rootless stem plant. Hornwort acts as a massive nutrient sponge, absorbing compounds directly from the water column. Because it completely lacks true roots, it is biologically a floating plant and will rot at the base if buried in substrate. While it can be wedged into hardscape or weighted down, it is most successfully utilized left free-floating. It is highly valued in breeding setups, as its dense, needle-like foliage provides an exceptional refuge for fry and shrimp. It is sensitive to sudden changes in water parameters and may temporarily shed its needles if shocked, but usually recovers quickly.

A classic, undemanding background plant that produces long, ribbon-like leaves. It spreads rapidly via runners and its long leaves often trail across the water surface, providing excellent cover and a natural jungle look.

A popular, fast-growing creeping stem plant known for its distinct, miniature clover-like leaves. It forms dense, cascading mounds or carpets and can be planted in the substrate or wedged into hardscape.

Blyxa japonica is an obligate aquatic plant that resembles a grassy rosette but is biologically a stem plant with tightly packed internodes. Under high light and with CO2 supplementation, it forms dense, bushy, golden-green to reddish thickets, making it an extremely popular midground transition plant in aquascaping. It develops a massive root system and benefits significantly from nutrient-rich substrates.

A light-green, trailing stem plant with delicate ivy-like leaves. It thrives in cooler water temperatures and grows rapidly under adequate lighting, often requiring frequent trimming to maintain a bushy appearance and prevent leggy growth.