Shoal & Stem

Species Catalogue

1,376 species — care guides, community photos, water parameters, and tank-mate compatibility.

fish
intermediate

Cosby Gourami

Trichopodus trichopterus

fishfreshwater
4″·20+ gal·semi-aggr.
fish
intermediate

Court Jester Goby

Koumansetta rainfordi

fishsaltwater
2.8″·20+ gal·peaceful
fish
beginner

Creamsicle Molly

Poecilia sphenops

fishfreshwater
3″·20+ gal·group 3+·peaceful
plant
beginner

Creeping Moss

Vesicularia sp. 'Creeping'

plantfreshwater

Flat-growing moss that creeps along surfaces rather than growing upward. Creates a neat, low carpet on rocks and wood. Easy to maintain.

plant
beginner

Crinum Natans

Crinum natans

plantfreshwater

Bulb plant with long, wavy ribbon leaves. Nearly indestructible — even survives with African cichlids. Grows from a large onion-like bulb.

fish
beginner

Croaking Gourami

Trichopsis vittata

fishfreshwater
2.8″·10+ gal·peaceful
fish
Eeasy

Cross Tetra

Tyttocharax madeirae

fishfreshwater
0.8″·10+ gal·group 6+·peaceful
shrimp
Mmedium

Crown Shrimp

Caridina logemanni

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
fish
beginner

Crowntail Betta

Betta splendens 'Crowntail'

fishfreshwater
2.5″·5+ gal·semi-aggr.
plant
beginner

Cryptocoryne Affinis

Cryptocoryne affinis

plantfreshwater

Classic crypt with dark green tops and reddish-brown undersides. One of the oldest aquarium crypts. Very hardy and forgiving.

plant
beginner

Cryptocoryne Albida

Cryptocoryne albida

plantfreshwater

A slender Cryptocoryne with narrow, strap-like leaves that range from olive-green to brownish-red depending on light intensity. Submerged leaves are typically narrower and more reddish than the emersed form. Grows to a manageable 15–20 cm (6–8 in) and is suited to the midground of smaller tanks or the foreground of larger setups. Tolerates a range of water conditions and is one of the easier narrow-leaved Crypts.

plant
beginner

Cryptocoryne Balansae

Cryptocoryne crispatula var. balansae

plantfreshwater

Cryptocoryne Balansae is a dramatic, tall-growing crypt producing strap-like leaves with deeply ruffled, crinkled edges that can reach 40–60 cm in length. Its striking vertical texture makes it one of the most visually distinctive background plants available without requiring high tech. Once established it is robust and spreads into an impressive stand via runners.

plant
beginner

Cryptocoryne Beckettii

Cryptocoryne beckettii

plantfreshwater

Cryptocoryne Beckettii is a compact, adaptable crypt producing wavy-edged leaves that range from olive-green on the upper surface to pink-brown or purple on the underside — colouration intensifying under brighter light. It is among the most forgiving crypts, tolerating harder and more alkaline water than most of its relatives. A reliable midground plant for low-tech community tanks.

plant
beginner

Cryptocoryne Cordata

Cryptocoryne cordata

plantfreshwater

Heart-shaped leaves with attractive bronze-green colouring. Grows relatively large for a crypt. Very adaptable to varying conditions.

plant
intermediate

Cryptocoryne Costata

Cryptocoryne costata

plantfreshwater

Rare Thai crypt with narrow green leaves and prominent midrib. Very compact growth. A sought-after species for crypt collectors.

plant
beginner

Cryptocoryne Crispatula

Cryptocoryne crispatula

plantfreshwater

Long, narrow, ribbon-like leaves that can reach 20+ inches. Creates a grass-like effect. Extremely tolerant of hard water. Very easy.

plant
intermediate

Cryptocoryne Ferruginea

Cryptocoryne ferruginea

plantfreshwater

Borneo crypt with striking reddish-brown colouration and rough leaf texture. Compact grower. Appreciates soft, acidic water.

plant
beginner

Cryptocoryne Flamingo

Cryptocoryne wendtii 'Flamingo'

plantfreshwater

Cryptocoryne Flamingo is an eye-catching cultivar with pale pink to deep rose-pink leaves that maintain their colour even in moderate light. A relatively recent cultivar, it adds pastel colour contrast rarely seen in aquatic plants. Hardy and slow-growing like other Cryptocorynes, making it easy to use as a focal foreground or midground accent.

plant
intermediate

Cryptocoryne Hudoroi

Cryptocoryne hudoroi

plantfreshwater

Tall crypt with dramatic, heavily bullated (textured) leaves. Slow-growing but creates stunning focal points. From Borneo limestone streams.

plant
beginner

Cryptocoryne Lucens

Cryptocoryne lucens

plantfreshwater

Cryptocoryne Lucens is a small, narrow-leaved crypt with plain bright-green foliage, reaching about 10–15 cm in height. It spreads via runners to form a tidy clump over time and is one of the easiest crypts to keep, tolerating a wide range of conditions including harder water. An excellent choice for foreground or midground planting without the demanding care of more ornate crypt species.

plant
beginner

Cryptocoryne Lutea

Cryptocoryne lutea

plantfreshwater

Cryptocoryne lutea is a small to medium-sized crypt producing olive-green to brownish-green leaves with a slightly hammered or textured surface. It is one of the most adaptable and forgiving crypt species, tolerating a wide range of water conditions including moderate hardness and near-neutral pH. Reaching 10–20 cm in height, it works well in the foreground or midground of medium to large planted tanks, spreading via runners into tidy clumps.

plant
beginner

Cryptocoryne Moehlmannii

Cryptocoryne moehlmannii

plantfreshwater

Compact crypt with smooth, spoon-shaped green leaves. Stays small — great for foreground use. Very easy and undemanding.

plant
beginner

Cryptocoryne Nevesii

Cryptocoryne nevesii

plantfreshwater

A small, compact Cryptocoryne with narrow, lance-shaped leaves of uniform mid-green. One of the more underrated compact Crypts, it stays small and spreads slowly via runners to form neat clusters. A good foreground alternative where HC Cuba or Monte Carlo would require CO2.

plant
intermediate

Cryptocoryne Nurii

Cryptocoryne nurii

plantfreshwater

A highly sought-after Cryptocoryne among collectors, prized for its dramatically patterned leaves featuring brown-green to dark olive surfaces with reddish-brown splotches, spots, and a heavily bullate texture. Multiple forms exist — some have narrow leaves, others broader. Slower and more delicate than common Crypts, it rewards patient keepers with unique, jewel-like foliage. Best maintained in stable, soft, slightly acidic water with minimal disturbance.

plant
beginner

Cryptocoryne Parva

Cryptocoryne parva

plantfreshwater

Cryptocoryne Parva is the smallest crypt species, producing narrow, plain-green leaves that rarely exceed 5–6 cm — making it the only crypt truly suitable for a foreground carpet role. Growth is extremely slow even under good conditions; patience of several months is required before carpeting effect appears. It is also the least prone to 'crypt melt' among its genus.

plant
beginner

Cryptocoryne Petchii

Cryptocoryne petchii

plantfreshwater

A compact, manageable Cryptocoryne from Sri Lanka with narrow, lance-shaped leaves that can range from olive-green to brownish depending on conditions. Often confused with C. wendtii but distinguished by its shorter stature and slightly narrower leaves. It is very adaptable and tolerates a wide pH and hardness range, making it one of the best Crypts for beginners. Forms attractive rosettes in the foreground or midground of most tanks.

plant
Eeasy

Cryptocoryne Pink Panther

Cryptocoryne wendtii Pink Panther

plantfreshwater

Cryptocoryne wendtii Pink Panther is a stunning mid-sized crypt featuring deep pink to reddish undersides on its leaves with darker green upper surfaces, creating striking two-tone coloration. This variety grows moderately and develops a compact rosette form, making it an excellent choice for mid-ground placement in planted tanks. It is hardy and adaptable, thriving in a wide range of water conditions with minimal special care.

plant
beginner

Cryptocoryne Pontederiifolia

Cryptocoryne pontederiifolia

plantfreshwater

A medium-sized Cryptocoryne with broad, oval-to-heart-shaped leaves in a uniform bright green. The rounded leaf form is quite different from most Crypts and adds a distinctive look to the midground. Relatively fast-growing for a Crypt and more tolerant of harder water than many species. An underrated choice that pairs beautifully with more colourful plants like AR or Rotala.

plant
intermediate

Cryptocoryne Pygmaea

Cryptocoryne pygmaea

plantfreshwater

One of the smallest crypts. Narrow grass-like leaves only 2–3 inches tall. Perfect foreground crypt for nano tanks.

plant
beginner

Cryptocoryne Retrospiralis

Cryptocoryne retrospiralis

plantfreshwater

Tall, narrow-leaved crypt with wavy margins. Can grow quite large. Creates a flowing, grass-like background effect. Very undemanding.

plant
intermediate

Cryptocoryne Scurrilis

Cryptocoryne scurrilis

plantfreshwater

Borneo crypt with heavily textured, bullated leaves. Dark green to brown. Unique wrinkled texture sets it apart from other crypts.

plant
intermediate

Cryptocoryne Spiralis

Cryptocoryne spiralis

plantfreshwater

Cryptocoryne Spiralis produces unusually long, slender leaves with a finely serrated or slightly twisted edge, giving it a distinctive spiral character unlike most other crypts. Leaves can reach 30–50 cm, placing it firmly in background territory. It prefers softer, slightly acidic water and benefits from CO2 supplementation to sustain its taller, more demanding growth habit.

plant
beginner

Cryptocoryne Undulata

Cryptocoryne undulata

plantfreshwater

A versatile mid-sized Cryptocoryne with lanceolate leaves that have attractively undulated margins. Colouration ranges from olive-green to reddish-brown depending on light intensity and water conditions. It is one of the hardiest Cryptocoryne species, tolerating a wider range of pH and hardness than most.

plant
intermediate

Cryptocoryne Usteriana

Cryptocoryne usteriana

plantfreshwater

A large, majestic Cryptocoryne species with broad, heavily bullate (bumpy-textured) leaves in shades of brown-green with reddish undersides. One of the biggest Crypts available, capable of reaching 50–60 cm in ideal conditions. Best suited to large tanks where it serves as a dramatic centrepiece or bold background plant. Slower to establish than smaller species but extremely long-lived and rewarding.

plant
Eeasy

Cryptocoryne Walkeri

Cryptocoryne walkeri

plantfreshwater

Cryptocoryne walkeri is a compact, slow-growing crypt with narrow, lance-shaped green leaves that form dense rosettes. It is one of the smallest Cryptocoryne species, making it ideal for foreground placement in smaller aquariums. This hardy plant is undemanding and tolerates a wide range of water conditions, making it excellent for beginners.

plant
beginner

Cryptocoryne Wendtii

Cryptocoryne wendtii

plantfreshwater

Cryptocoryne wendtii is a popular, low-maintenance rosette plant available in several colour forms from green to brown-red. It may undergo 'crypt melt' when first planted or after water chemistry changes, but almost always recovers. Once established it is resilient and spreads via runners.