Shoal & Stem

Species Catalogue

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

fish
intermediate

Lemon Oscar

Astronotus ocellatus

fishfreshwater
14″·75+ gal·semi-aggr.
fish
beginner

Lemon Tetra

Hyphessobrycon pulchripinnis

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
fish
intermediate

Lemonpeel Angelfish

Centropyge flavissima

fishsaltwater
5.5″·55+ gal·semi-aggr.
fish
intermediate

Leopard Angelfish

Pterophyllum scalare

fishfreshwater
6″·30+ gal·group 2+·semi-aggr.
fish
beginner

Leopard Danio

Danio rerio

fishfreshwater
2″·10+ gal·group 6+·peaceful
fish
advanced

Leopard Discus

Symphysodon sp.

fishfreshwater
6″·55+ gal·group 4+·peaceful
fish
intermediate

Leopard Frog Pleco

Peckoltia compta

fishfreshwater
4″·30+ gal·semi-aggr.
snail
Eeasy

Leopard Ramshorn Snail

Planorbella duryi

snailfreshwater
1.25″·5+ gal·peaceful
fish
advanced

Leopold's Angelfish

Pterophyllum leopoldi

fishfreshwater
4″·30+ gal·group 2+·semi-aggr.
fish
beginner

Leucomelas Corydoras

Corydoras leucomelas

fishfreshwater
2″·15+ gal·group 6+·peaceful
fish
advanced

Licorice Gourami

Parosphromenus deissneri

fishfreshwater
1.5″·10+ gal·peaceful
plant
intermediate

Lilaeopsis Mauritius

Lilaeopsis mauritiana

plantfreshwater

Narrow-leaved micro sword that creates dense carpets. Slightly taller than L. brasiliensis. Spreads by runners across the substrate.

plant
beginner

Lilaeopsis New Zealand

Lilaeopsis novae-zelandiae

plantfreshwater

Fine-leaved grass-like plant that forms low carpets. One of the easier carpet plants — tolerates lower light than most. From New Zealand.

plant
intermediate

Limnophila Aromatica

Limnophila aromatica

plantfreshwater

Limnophila aromatica is a stunning stem plant with leaves that shift from green to vibrant purple-red under high light and good iron supplementation. Used extensively in Dutch-style aquascaping, it provides brilliant colour contrast in the background.

plant
intermediate

Limnophila Aromaticoides

Limnophila aromaticoides

plantfreshwater

Aromatic stem plant with whorled needle-like leaves. Develops purple-red tips under high light. Fine, feathery texture.

plant
intermediate

Limnophila Hippuridoides

Limnophila hippuridoides

plantfreshwater

An elegant Limnophila with longer, finely serrated leaves arranged in whorls. Under intense light the leaves turn vivid pink to purple, creating striking colour columns for Dutch and Nature Aquarium style. Requires CO2 and good fertilisation for the best colour expression but grows vigorously once established.

plant
intermediate

Limnophila Rugosa

Limnophila rugosa

plantfreshwater

Unique Limnophila with textured, slightly wrinkled leaves. Bronze-green coloration. Grows emersed beautifully too.

plant
beginner

Limnophila Sessiliflora

Limnophila sessiliflora

plantfreshwater

Sometimes called Ambulia, this fast-growing stem plant produces dense whorls of fine, feathery leaves that resemble a soft green bottle brush. One of the most forgiving stem plants — it grows without CO2 injection and tolerates a wide pH range, making it ideal for beginner planted tanks.

plant
intermediate

Limnophila Vietnam

Limnophila sp. 'Vietnam'

plantfreshwater

Vietnamese variety with feathery whorled leaves that develop reddish-purple tones. Fast-growing background plant with great colour.

fish
advanced

Lined Seahorse

Hippocampus erectus

fishsaltwater
6″·30+ gal·group 2+·peaceful
fish
Mmedium

Linke's Licorice Gourami

Parosphromenus linkei

fishfreshwater
1.2″·10+ gal·peaceful
fish
intermediate

Lionhead Goldfish

Carassius auratus

fishfreshwater
6″·20+ gal·peaceful
plant
intermediate

Littorella Uniflora

Littorella uniflora

plantfreshwater

European native with rosettes of narrow, bright green leaves. Spreads by runners to form carpets. Does well in cooler water.

plant
intermediate

Lobelia Cardinalis

Lobelia cardinalis

plantfreshwater

A beautiful aquatic plant with round, bright green leaves above and reddish-purple undersides. It grows well in low to medium light without CO2, making it a good choice for lower-tech planted tanks.

plant
beginner

Lobelia Small Form

Lobelia cardinalis

plantfreshwater

Compact rosette plant with spoon-shaped leaves — green on top, vivid purple underneath. One of the most striking two-tone aquascaping plants. Very adaptable and slow-growing. Excellent as a midground accent.

coral
beginner

Lobo Coral

Lobophyllia hemprichii

coralsaltwater
2″·30+ gal·peaceful
fish
beginner

Longfin Bristlenose Pleco

Ancistrus sp.

fishfreshwater
5″·20+ gal·peaceful
fish
beginner

Longfin Rosy Barb

Pethia conchonius

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

Longfin Tiger Barb

Puntigrus tetrazona

fishfreshwater
3″·20+ gal·group 6+·semi-aggr.
fish
beginner

Longfin Zebra Danio

Danio rerio

fishfreshwater
2″·10+ gal·group 6+·peaceful
fish
intermediate

Longnose Butterflyfish

Forcipiger flavissimus

fishsaltwater
8.5″·75+ gal·peaceful
fish
beginner

Longnose Hawkfish

Oxycirrhites typus

fishsaltwater
5″·30+ gal·semi-aggr.
fish
beginner

Loreto Tetra

Hyphessobrycon loretoensis

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

Loxozonus Corydoras

Corydoras loxozonus

fishfreshwater
2″·15+ gal·group 6+·peaceful
fish
beginner

Lubbock's Fairy Wrasse

Cirrhilabrus lubbocki

fishsaltwater
4″·30+ gal·peaceful
plant
intermediate

Ludwigia Arcuata

Ludwigia arcuata

plantfreshwater

Ludwigia Arcuata is a fine-leaved stem plant with narrow, needle-like leaves that turn deep red to orange-red under high light and iron-rich dosing, contrasting beautifully with broader-leaved green plants. It requires more light and nutrients than L. repens to achieve its signature colour. Frequent trimming promotes bushy side-shoot growth and prevents the lower stem from going bare.