Shoal & Stem

Species Catalogue

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

fish
intermediate

Rainbow Cichlid

Herotilapia multispinosa

fishfreshwater
5″·30+ gal·semi-aggr.
crab
Xexpert

Rainbow Crab

Cardisoma armatum

crabfreshwater
5″·40+ gal·aggressive
fish
intermediate

Rainbow Emperor Tetra

Nematobrycon lacortei

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

Rainbow Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 3+·peaceful
fish
intermediate

Rainbow Shark

Epalzeorhynchos frenatum

fishfreshwater
6″·55+ gal·semi-aggr.
snail
beginner

Ramshorn Snail

Planorbarius corneus

snailfreshwater
0.75″·5+ gal·peaceful
fish
intermediate

Ranchu Goldfish

Carassius auratus

fishfreshwater
7″·20+ gal·peaceful
fish
intermediate

Red Arc Pencilfish

Nannostomus rubrocaudatus

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
shrimp
Eeasy

Red Babaulti Shrimp

Caridina babaulti

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

Red Cabomba

Cabomba furcata

plantfreshwater

Red Cabomba is a vibrant stem plant featuring delicate, feathery red-tinted foliage that intensifies under high light conditions. Its fine, branching leaves create an elegant, wispy appearance ideal for creating depth and visual interest in the midground to background. This plant grows moderately fast and is relatively undemanding, making it suitable for intermediate aquarists.

fish
Mmedium

Red Cap Lyretail

Aphyosemion calliurum

fishfreshwater
1.5″·10+ gal·semi-aggr.
fish
beginner

Red Chest Endler

Poecilia wingei

fishfreshwater
1.2″·5+ gal·group 3+·peaceful
crab
Mmedium

Red Claw Crab

Perisesarma bidens

crabfreshwater
2″·20+ gal·semi-aggr.
shrimp
Xexpert

Red Claw Macro

Macrobrachium assamense

shrimpfreshwater
5.9″·30+ gal·aggressive
fish
beginner

Red Devil Molly

Poecilia sphenops

fishfreshwater
3″·15+ gal·group 3+·peaceful
fish
beginner

Red Dwarf Gourami

Trichogaster lalius

fishfreshwater
3.5″·15+ gal·semi-aggr.
fish
beginner

Red Eye Tetra

Moenkhausia sanctaefilomenae

fishfreshwater
2.2″·20+ gal·group 6+·peaceful
plant
beginner

Red Flame Sword

Echinodorus sp. 'Red Flame'

plantfreshwater

Hybrid sword plant with brilliant red new leaves that mature to deep green. Compact grower that doesn't get too large. Eye-catching centrepiece.

shrimp
Hhard

Red Galaxy Pinto Shrimp

Caridina logemanni

shrimpfreshwater
1.25″·10+ gal·group 10+·peaceful
algae
beginner

Red Gracilaria

Gracilaria sp.

algaesaltwater

Bushy red-to-burgundy macroalgae prized as live food for herbivorous fish — tangs, rabbitfish, and urchins graze on it enthusiastically. Also an excellent nutrient exporter in refugia. Tumbles well under flow and tolerates a wide range of conditions.

algae
intermediate

Red Grape Algae

Botryocladia sp.

algaesaltwater

Rare and coveted — clusters of translucent, deep-red spherical bladders like bunches of miniature grapes. A showpiece macroalgae that attaches to live rock. Slow-growing and sensitive; requires stable, high-quality water. Highly sought after for display refugia and naturally deters herbivorous fish.

fish
intermediate

Red Hump Eartheater

Geophagus steindachneri

fishfreshwater
7″·55+ gal·group 4+·peaceful
fish
beginner

Red Jewel Cichlid

Hemichromis lifalili

fishfreshwater
5″·30+ gal·aggressive
shrimp
intermediate

Red King Kong Shrimp

Caridina cantonensis

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
shrimp
Mmedium

Red Line Shrimp

Caridina thambipillai

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
snail
Eeasy

Red Lip Nerite Snail

Neritina waigiensis

snailfreshwater
0.75″·5+ gal·peaceful
fish
beginner

Red Lizard Catfish

Rineloricaria sp. L010a

fishfreshwater
5″·30+ gal·peaceful
fish
Mmedium

Red Melon Badis

Dario hysginon

fishfreshwater
0.8″·10+ gal·peaceful
fish
intermediate

Red Neon Blue Eye

Pseudomugil luminatus

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
shrimp
Mmedium

Red Nose Shrimp

Caridina gracilirostris

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
snail
Eeasy

Red Onion Nerite Snail

Vittina waigiensis

snailfreshwater
0.75″·5+ gal·peaceful
fish
intermediate

Red Oscar

Astronotus ocellatus

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

Red Phantom Tetra

Megalamphodus sweglesi

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

Red Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 3+·peaceful
snail
beginner

Red Racer Nerite Snail

Vittina waigiensis

snailfreshwater
1″·5+ gal·peaceful
fish
beginner

Red Rainbowfish

Glossolepis incisus

fishfreshwater
5″·40+ gal·group 4+·peaceful