Shoal & Stem

Species Catalogue

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

plant
medium

Limnophila Vietnam

Limnophila sp. 'Vietnam'

plantfreshwater
Background·Fast growth
fish
medium

Linke's Licorice Gourami

Parosphromenus linkei

fishfreshwater
1.2″·10+ gal·peaceful
fish
medium

Lionhead Goldfish

Carassius auratus

fishfreshwater
6″·20+ gal·peaceful
plant
medium

Littorella Uniflora

Littorella uniflora

plantfreshwater
Foreground·Slow growth
fish
medium

Longfin Tiger Barb

Puntigrus tetrazona

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

Longnose Butterflyfish

Forcipiger flavissimus

fishsaltwater
8.5″·75+ gal·peaceful
plant
medium

Ludwigia Arcuata

Ludwigia arcuata

plantfreshwater
Midground·High light·Moderate growth
plant
medium

Ludwigia Atlantis

Ludwigia sp. Atlantis

plantfreshwater
Midground·Medium growth
plant
medium

Ludwigia Brevipes

Ludwigia brevipes

plantfreshwater
Midground·Moderate growth
plant
medium

Ludwigia Diamond

Ludwigia sp. 'Diamond'

plantfreshwater
Midground·Moderate growth
plant
medium

Ludwigia Mullertii

Ludwigia palustris × repens

plantfreshwater
Midground·Fast growth
plant
medium

Ludwigia Ovalis

Ludwigia ovalis

plantfreshwater
Midground·Moderate growth
plant
medium

Ludwigia Peruensis

Ludwigia peruensis

plantfreshwater
Background·Fast growth
plant
medium

Ludwigia Super Red

Ludwigia sp. 'Super Red'

plantfreshwater
Background·High light·Moderate growth
plant
medium

Ludwigia Super Red Mini

Ludwigia sp. 'Super Red Mini'

plantfreshwater
Midground·High light·Moderate growth
fish
medium

Lyretail Anthias

Pseudanthias squamipinnis

fishsaltwater
5″·75+ gal·group 5+·peaceful
fish
medium

Madagascar Rainbow

Bedotia geayi

fishfreshwater
3.5″·40+ gal·group 6+·peaceful
algae
medium

Maiden's Hair

Chlorodesmis fastigiata

algaesaltwater

Vivid blue-green turf-like tufts of very fine filaments — a common sight on Indo-Pacific reefs. In captivity it can spread across rockwork quickly. Produces terpene compounds that deter most grazers. Interesting as a biotope element but can become a nuisance if left unchecked.

fish
medium

Maingano

Melanochromis cyaneorhabdos

fishfreshwater
3.5″·40+ gal·aggressive
shrimp
medium

Malaya Shrimp

Caridina malayensis

shrimpfreshwater
1.2″·5+ gal·group 10+·peaceful
fish
medium

Marble Angelfish

Pterophyllum scalare

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

Marbled Hatchetfish

Carnegiella strigata

fishfreshwater
1.5″·15+ gal·group 6+·peaceful
fish
medium

Marbled Headstander

Abramites hypselonotus

fishfreshwater
3.5″·30+ gal·group 4+·peaceful
fish
medium

Marlier's Julie

Julidochromis marlieri

fishfreshwater
3.5″·30+ gal·semi-aggr.
plant
medium

Mayaca Fluviatilis

Mayaca fluviatilis

plantfreshwater
Background·Medium–High light·Moderate growth
amphibian
medium

Melanoid Axolotl

Ambystoma mexicanum

amphibianfreshwater
10″·20+ gal·peaceful
plant
medium

Melon Sword

Echinodorus osiris

plantfreshwater
Midground·Medium growth
algae
medium

Mermaid's Fan

Udotea flabellum

algaesaltwater

Elegant fan-shaped calcified macroalgae on a slender white stalk. Grows in sandy areas near reefs and seagrass beds. A beautiful decorative species for low-flow areas of the display tank. Like Penicillus, it anchors in deep sand and has a natural lifespan of several months.

algae
medium

Mermaid's Wine Glass

Acetabularia acetabulum

algaesaltwater

One of the most extraordinary organisms in biology — a single giant cell shaped like a wine glass on a slender stalk. Each 'plant' is a single cell that can grow to 10 cm. Famous in cell biology research. In aquariums it anchors in sand and is a remarkable conversation piece. Prefers cooler, calcium-rich water.

fish
medium

Midas Cichlid

Amphilophus citrinellus

fishfreshwater
15″·75+ gal·aggressive
fish
medium

Millennium Rainbowfish

Glossolepis pseudoincisus

fishfreshwater
4″·30+ gal·group 6+·peaceful
fish
medium

Mimic Tang

Acanthurus pyroferus

fishsaltwater
10″·75+ gal·semi-aggr.
fish
medium

Mirabilis Killifish

Fundulopanchax mirabilis

fishfreshwater
2.5″·20+ gal·semi-aggr.
shrimp
medium

Mischling Shrimp

Caridina sp. (Mischling)

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
plant
medium

Monte Carlo

Micranthemum tweediei

plantfreshwater
Carpet·Medium to high light·Moderate growth
amphibian
medium

Mosaic Axolotl

Ambystoma mexicanum

amphibianfreshwater
10″·20+ gal·peaceful