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Shoal & Stem

Flora & Fauna

673 entries — care guides, placement tips, and notes from the community

plant
advanced

Tonina Fluviatilis

Tonina fluviatilis

plantfreshwater

An exotic stem plant from the Amazon that produces tight spirals of fine, needle-like leaves arranged around the stem. It is challenging to keep, demanding very soft, acidic water and strong CO2 supplementation — conditions that mimic its blackwater origins. A showpiece plant in specialist Amazonian biotope and high-tech scapes.

plant
medium

Umbrella Hairgrass

Eleocharis vivipara

plantfreshwater

Eleocharis Vivipara, Umbrella Hairgrass, is uniquely different from other hairgrass species — when grown submerged its slender stems branch repeatedly into arching, umbrella-like tufts rather than simple grass blades, creating a highly textural midground accent. Each stem tip can produce plantlets that anchor to substrate, aiding natural propagation. It needs moderate light and benefits from CO2.

plant
hard

Utricularia Graminifolia

Utricularia graminifolia

plantfreshwater

Carnivorous aquatic plant used as a fine-leaved carpet alternative. Forms a delicate bright-green lawn. Requires CO2, high light, and soft water. Rewarding when established.

plant
easy

Vallisneria Americana

Vallisneria americana

plantfreshwater

A tall, ribbon-leaved background plant that spreads aggressively by runners to create natural-looking grass beds. Leaves can reach 50–100 cm, making it ideal for very tall tanks or ponds. Very adaptable and grows without CO2 injection in moderate to hard water. An excellent fish habitat plant that oxygenates the water actively.

plant
easy

Vallisneria Nana

Vallisneria nana

plantfreshwater

Vallisneria nana is a dwarf vallisneria with narrow, grass-like leaves that stay much shorter than spiral vallisneria. It spreads prolifically via runners and creates natural-looking meadow backgrounds. Excellent for tanks with moderate lighting and no CO2.

plant
easy

Vallisneria Spiralis

Vallisneria spiralis

plantfreshwater

Vallisneria spiralis is a fast-growing ribbon grass that produces long, narrow, strap-like leaves that spiral slightly as they grow, creating a graceful waving motion in moderate current. It is one of the easiest and most forgiving background plants available, tolerating hard, alkaline water that challenges most aquatic plants. It spreads rapidly via runners and can quickly fill the background of large aquariums without CO2 injection.

plant
easy

Vallisneria Tortifolia

Vallisneria tortifolia

plantfreshwater

The corkscrew Vallisneria produces striking, tightly twisted ribbon leaves that spiral as they grow. Unlike straight Vallisneria species it stays at a medium height (20–40 cm), making it more versatile in mid-sized tanks. A distinctive textural element in planted tank backgrounds, especially effective in Dutch Style rows.

plant
intermediate

Water Hedge

Didiplis diandra

plantfreshwater

A slender, delicate stem plant with fine, needle-like opposite leaves. Under high light and CO2 it develops vivid orange-red colouring that makes it a stunning accent in Dutch and Nature Aquarium layouts. It is sensitive to low light and nutrient deficiencies, which quickly cause yellowing.

plant
easy

Water Lettuce

Pistia stratiotes

plantfreshwater

Water lettuce is a floating rosette plant with velvety, pale green leaves and a substantial root system. It provides excellent shade, nutrient export, and shelter for surface-shy fish. It grows rapidly in bright conditions and may become invasive outdoors.

plant
easy

Water Sprite

Ceratopteris thalictroides

plantfreshwater

Water Sprite is a versatile aquatic fern that can be grown both floating and rooted. The finely dissected, lacy fronds give it a delicate, feathery appearance. Floating specimens develop broader, more deeply lobed leaves and provide excellent surface cover and fry refuge. A classic, beginner-friendly plant that grows vigorously.

plant
hard

Water Violet

Hottonia palustris

plantfreshwater

Stunning cold-water stem plant with whorls of feathery leaves. One of the most beautiful temperate aquarium plants. Challenging to keep in tropical tanks — prefers cool, clear, well-oxygenated water.

plant
easy

Water Wisteria

Hygrophila difformis

plantfreshwater

Water wisteria is a fast-growing stem plant with deeply lobed, feathery leaves that vary in form depending on light intensity. It is an excellent nutrient sponge that helps control algae in new setups. Cuttings root readily and it adapts to a wide range of water parameters.

plant
easy

Water Wisteria

Hygrophila difformis

plantfreshwater

Famous for its deeply pinnate, fern-like leaves that look remarkably intricate yet require almost no effort. A true beginner's showpiece — grows rapidly, outcompetes algae, and can be planted or left floating. Leaf shape changes dramatically depending on light intensity.

plant
expert

Waterwort

Elatine triandra

plantfreshwater

One of the finest-leaved carpet plants in existence — creates an almost moss-like lawn of tiny round leaves. Extremely challenging; requires CO2, very high light, and excellent nutrient control. The pinnacle of carpeting plants.

plant
easy

Wavy Aponogeton

Aponogeton crispus

plantfreshwater

A bulb plant with long, bright green leaves that have distinctly wavy, crinkled margins. One of the easiest Aponogeton species to keep, tolerating low light without CO2 injection. It goes through natural growth and dormancy cycles — if leaves die back, leave the bulb and it will re-sprout. An excellent low-maintenance background plant.

plant
easy

Weeping Moss

Vesicularia ferriei

plantfreshwater

Weeping Moss is prized for the elegant downward-drooping habit of its fine fronds, which cascade gracefully off driftwood and rocks like a willow tree in miniature. This weeping growth pattern is most pronounced in moderate flow and makes it one of the most aesthetically distinct mosses for aquascaping. It is slightly slower growing than Java Moss but creates a more refined, delicate textural effect.

plant
hard

Whorly Rotala

Rotala wallichii

plantfreshwater

Delicate, feathery pink-to-red stem plant. One of the most visually striking rotala species. Demanding — needs high light, CO2 injection, and pristine water to colour up.

plant
easy

Willis's Cryptocoryne

Cryptocoryne x willisii

plantfreshwater

One of the smallest and most versatile cryptocorynes — stays compact even in high light. Deep green, slightly wavy leaves. Perfect low-maintenance foreground or midground plant that spreads via runners.

plant
easy

Willow Hygrophila

Hygrophila salicifolia

plantfreshwater

Long, willow-shaped leaves up to 15 cm in length give this species a softer, more natural look compared to other Hygrophilas. The leaves are pale green and narrow, creating a flowing appearance in flow or current. One of the taller background choices in the genus.

plant
intermediate

Willow Moss

Fontinalis antipyretica

plantfreshwater

Willow Moss is a native cold-water aquatic moss with delicate, overlapping dark green leaves on branching stems. It prefers cooler water and good flow, making it excellent for coldwater and temperate setups with goldfish, temperate plants, or in nature biotopes. It attaches to rocks and wood and creates a natural, stream-like texture.

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