Shoal & Stem

Species Catalogue

1,580 species — care guides, community photos, water parameters, and tank-mate compatibility.

algae
medium

Rhizoclonium

Rhizoclonium sp.

algaefreshwater

Thin, cotton-like green threads that form loose, easily detached clumps — often confused with hair algae but coarser and more tangled. Tends to form clumps rather than sheets. Usually caused by excess ammonia or organics in new tanks. Amano shrimp and Florida Flagfish handle it well.

coral
easy

Ricordea Florida

Ricordea florida

coralsaltwater
2″·30+ gal·peaceful
coral
easy

Ricordea Yuma

Ricordea yuma

coralsaltwater
2″·30+ gal·peaceful
shrimp
easy

Rili Red Sakura Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
shrimp
easy

Rili Shrimp

Neocaridina davidi var. Rili

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
plant
medium

River Buttercup

Ranunculus inundatus

plantfreshwater
Foreground
shrimp
hard

Rock Prawn

Macrobrachium lar

shrimpfreshwater
3.5″·20+ gal·aggressive
fish
medium

Rope Fish

Erpetoichthys calabaricus

fishfreshwater
15″·55+ gal·peaceful
plant
easy

Rosanervig Hygrophila

Hygrophila polysperma

plantfreshwater
Background·Medium–high light
plant
medium

Rose Moss

Taxiphyllum sp. 'Rose'

plantfreshwater
Epiphyte·Very growth
plant
easy

Rose Sword

Echinodorus sp. 'Rose'

plantfreshwater
Midground·Moderate growth
fish
medium

Rosetail Betta

Betta splendens 'Rosetail'

fishfreshwater
2.5″·5+ gal·semi-aggr.
fish
easy

Rosy Barb

Pethia conchonius

fishfreshwater
3.5″·25+ gal·group 6+·semi-aggr.
fish
easy

Rosy Loach

Petruichthys sp. rosy

fishfreshwater
1.2″·10+ gal·group 6+·peaceful
fish
easy

Rosy Red Minnow

Pimephales promelas

fishfreshwater
2.5″·10+ gal·group 6+·peaceful
fish
easy

Rosy Tetra

Hyphessobrycon rosaceus

fishfreshwater
2″·15+ gal·group 6+·peaceful
plant
hard

Rotala Bangladesh

Rotala sp.

plantfreshwater
Midground
plant
medium

Rotala Bonsai

Rotala sp. Bonsai

plantfreshwater
Midground·Slow growth
plant
hard

Rotala Bossii

Rotala sp. 'Bossii'

plantfreshwater
Midground·Slow growth
plant
hard

Rotala Butterfly

Rotala sp. 'Butterfly'

plantfreshwater
Midground·Slow growth
plant
medium

Rotala Colorata

Rotala sp. 'Colorata'

plantfreshwater
Midground·Moderate growth
plant
medium

Rotala Enie

Rotala sp. 'Enie'

plantfreshwater
Midground·Moderate growth
plant
medium

Rotala Florida

Rotala sp. 'Florida'

plantfreshwater
Background·Fast growth
plant
hard

Rotala Macrandra Mini Red

Rotala macrandra Mini Red

plantfreshwater
Midground·Slow growth
plant
hard

Rotala Macrandra Narrow Leaf

Rotala macrandra Narrow Leaf

plantfreshwater
Background·Medium growth
plant
medium

Rotala Mexicana

Rotala mexicana

plantfreshwater

A delicate fine-leaved stem plant native to Mexico, with small rounded leaves that take on warm pink to orange tones under high light and CO2. Best planted in dense bunches for a feathery, textured effect in the midground or background.

plant
hard

Rotala Mexicana Goias

Rotala mexicana

plantfreshwater
Midground·High light·Slow growth
plant
hard

Rotala Mini Butterfly

Rotala sp. 'Mini Butterfly'

plantfreshwater
Midground·Slow growth
plant
easy

Rotala Nanjenshan

Rotala nanjenshan

plantfreshwater
Background·Low–High light·Fast growth
plant
hard

Rotala Orange Juice

Rotala sp. 'Orange Juice'

plantfreshwater
Midground·Moderate growth
plant
medium

Rotala Ramosior Florida

Rotala ramosior Florida

plantfreshwater
Background·Fast growth
plant
medium

Rotala Rotundifolia Blood Red

Rotala rotundifolia Blood Red

plantfreshwater
Background·Fast growth
plant
medium

Rotala Rotundifolia Colorata

Rotala rotundifolia Colorata

plantfreshwater
Background·Fast growth
plant
medium

Rotala Rotundifolia Orange Juice

Rotala rotundifolia Orange Juice

plantfreshwater
Background·Medium growth
plant
medium

Rotala Singapore

Rotala sp.

plantfreshwater
Midground·Medium to high light·Medium growth
plant
medium

Rotala Sunset

Rotala sp. 'Sunset'

plantfreshwater
Midground·Moderate growth