Shoal & Stem

Species Catalogue

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

plant
easy

Hygrophila Tiger

Hygrophila sp. 'Tiger'

plantfreshwater
Midground·Moderate growth
algae
easy

Hypnea

Hypnea musciformis

algaesaltwater

Wiry, reddish-brown branching macroalgae that tangs and rabbitfish readily consume. Grows quickly and provides excellent nutrient export in refugia. Attaches loosely to rubble and rock. One of the most palatable macroalgae for herbivorous reef fish — can be offered directly as live food.

fish
easy

Imitator Corydoras

Corydoras imitator

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

Inch Plant Nanouk

Tradescantia 'Nanouk'

terrestrialfreshwater
Bright indirect light·Fast growth
snail
easy

Ivory Mystery Snail

Pomacea bridgesii

snailfreshwater
2″·5+ gal·peaceful
fish
easy

Jack Dempsey

Rocio octofasciata

fishfreshwater
8″·55+ gal·aggressive
snail
easy

Jade Mystery Snail

Pomacea bridgesii

snailfreshwater
2″·5+ gal·peaceful
algae
easy

Jania

Jania rubens

algaesaltwater

Feathery, pinkish-white tufts of jointed calcified branches — a beautiful encrusting coralline relative that forms soft mats on rockwork. Provides habitat for tiny amphipods and copepods. A common and welcome hitchhiker on Mediterranean and Atlantic live rock. Tolerates cooler water than most corallines.

fish
easy

Japan Blue Endler

Poecilia wingei

fishfreshwater
1.2″·5+ gal·group 3+·peaceful
plant
easy

Japanese Cress

Cardamine lyrata

plantfreshwater
Midground
plant
easy

Java Fern Mini

Microsorum pteropus 'Mini'

plantfreshwater
Epiphyte·Slow growth
plant
easy

Java Fern Thor's Hammer

Microsorum pteropus 'Thor's Hammer'

plantfreshwater
Epiphyte·Slow growth
fish
easy

Jellybean Tetra

Ladigesia roloffi

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

Jewel Cichlid

Hemichromis bimaculatus

fishfreshwater
6″·30+ gal·aggressive
fish
easy

Julii Cichlid

Julidochromis transcriptus

fishfreshwater
3″·30+ gal·semi-aggr.
shrimp
easy

Kanoko Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 6+·peaceful
fish
easy

Kissing Gourami

Helostoma temminckii

fishfreshwater
10″·55+ gal·semi-aggr.
fish
easy

Kitty Tetra

Hyphessobrycon heliacus

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

Knight Goby

Stigmatogobius sadanundio

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

Koi Swordtail

Xiphophorus hellerii

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

Kole Tang

Ctenochaetus strigosus

fishsaltwater
7″·75+ gal·semi-aggr.
fish
easy

L075 Para Pleco

Peckoltia sabaji

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

L144 Lemon Bristlenose Pleco

Ancistrus sp. L144

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

L183 Starlight Bristlenose Pleco

Ancistrus dolichopterus

fishfreshwater
5″·40+ gal·peaceful
fish
easy

Laguna de Patos Endler

Poecilia wingei

fishfreshwater
1.2″·5+ gal·group 3+·peaceful
fish
easy

Lake Tebera Rainbowfish

Melanotaenia herbertaxelrodi

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

Lawnmower Blenny

Salarias fasciatus

fishsaltwater
4.5″·30+ gal·peaceful
coral
easy

Leather Coral

Sarcophyton spp.

coralsaltwater
2″·50+ gal·peaceful
fish
easy

Lemon Blue Eye Bristlenose Pleco

Ancistrus sp.

fishfreshwater
5″·20+ gal·peaceful
fish
easy

Leopard Danio

Danio rerio

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

Leopard Ramshorn Snail

Planorbella duryi

snailfreshwater
1.25″·5+ gal·peaceful
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

Lobelia Small Form

Lobelia cardinalis

plantfreshwater
Midground
coral
easy

Lobo Coral

Lobophyllia hemprichii

coralsaltwater
2″·30+ gal·peaceful
fish
easy

London Shubunkin

Carassius auratus

fishfreshwater
12″·40+ gal·peaceful