Shoal & Stem

Species Catalogue

736 species matching your filters — care guides, community photos, water parameters, and tank-mate compatibility.

fish
easy

Leucomelas Corydoras

Corydoras leucomelas

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

Lilaeopsis New Zealand

Lilaeopsis novae-zelandiae

plantfreshwater
Carpet·Slow growth
plant
easy

Limnophila Sessiliflora

Limnophila sessiliflora

plantfreshwater
Background·Medium–High light·Very growth
plant
easy

Lobelia Small Form

Lobelia cardinalis

plantfreshwater
Midground
coral
easy

Lobo Coral

Lobophyllia hemprichii

coralsaltwater
2″·30+ gal·peaceful
fish
easy

Longfin Bristlenose Pleco

Ancistrus sp.

fishfreshwater
5″·20+ gal·peaceful
fish
easy

Longfin Rosy Barb

Pethia conchonius

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

Longfin Zebra Danio

Danio rerio

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

Longnose Hawkfish

Oxycirrhites typus

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

Loreto Corydoras

Corydoras loretoensis

fishfreshwater
1.2″·20+ gal·group 4+·peaceful
fish
easy

Loreto Tetra

Hyphessobrycon loretoensis

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

Loxozonus Corydoras

Corydoras loxozonus

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

Lubbock's Fairy Wrasse

Cirrhilabrus lubbocki

fishsaltwater
4″·30+ gal·peaceful
plant
easy

Ludwigia Repens

Ludwigia repens

plantfreshwater
Background·Medium to high light·Moderate growth
plant
easy

Ludwigia Rubin

Ludwigia repens 'Rubin'

plantfreshwater
Background·Fast growth
plant
easy

Ludwigia sp. Red

Ludwigia sp. 'Red'

plantfreshwater
Background·Fast growth
fish
easy

Lyretail Guppy

Poecilia reticulata

fishfreshwater
2″·10+ gal·group 3+·peaceful
fish
easy

Lyretail Molly

Poecilia sphenops

fishfreshwater
3″·20+ gal·group 3+·peaceful
fish
easy

Lyretail Swordtail

Xiphophorus hellerii

fishfreshwater
4.5″·20+ gal·group 3+·peaceful
fish
easy

Macropterus Corydoras

Corydoras macropterus

fishfreshwater
3″·20+ gal·group 4+·peaceful
snail
easy

Magenta Mystery Snail

Pomacea bridgesii

snailfreshwater
2″·5+ gal·peaceful
fish
easy

Malabar Danio

Devario malabaricus

fishfreshwater
3.5″·20+ gal·group 6+·peaceful
fish
easy

Marble Betta

Betta splendens 'Marble'

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

Marble Molly

Poecilia sphenops

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

Marble Queen Sword Mini

Echinodorus cordifolius 'Mini'

plantfreshwater
Midground·Slow growth
snail
easy

Margarita Snail

Margarites pupillus

snailsaltwater
1″·10+ gal·peaceful
fish
easy

Marigold Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 5+·peaceful
algae
easy

Marimo Moss Ball

Aegagropila linnaei

algaefreshwater

Beloved velvety-green spheres of filamentous green algae — not a moss at all. Forms naturally in cold lakes where wave action rolls colonies into balls over decades. A low-maintenance aquarium icon that grows extremely slowly. Rotate occasionally for even light exposure.

invertebrate
easy

Marmorkrebs Crayfish

Procambarus virginalis

invertebratefreshwater
1.5″·10+ gal·semi-aggr.
fish
easy

Maroon Clownfish

Premnas biaculeatus

fishsaltwater
6″·30+ gal·group 2+·aggressive
plant
easy

Marsilea Crenata

Marsilea crenata

plantfreshwater
Carpet·Medium to high light·Medium growth
plant
easy

Marsilea Hirsuta

Marsilea hirsuta

plantfreshwater
Carpet·Medium–High light·Moderate growth
plant
easy

Marsilea Minuta

Marsilea minuta

plantfreshwater
Carpet·Low to high light·Medium growth
plant
easy

Marsilea Quadrifolia

Marsilea quadrifolia

plantfreshwater
Foreground·Low–High light·Moderate growth
coral
easy

Maze Brain Coral

Platygyra daedalea

coralsaltwater
2″·30+ gal·peaceful
fish
easy

McCosker's Flasher Wrasse

Paracheilinus mccoskeri

fishsaltwater
3.5″·55+ gal·peaceful