Shoal & Stem

Species Catalogue

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

fish
easy

Red Eye Tetra

Moenkhausia sanctaefilomenae

fishfreshwater
2.2″·20+ gal·group 6+·peaceful
fish
medium

Red Hook Silver Dollar

Myloplus rubripinnis

fishfreshwater
3.5″·75+ gal·group 6+·peaceful
fish
medium

Red Hump Eartheater

Geophagus steindachneri

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

Red Jewel Cichlid

Hemichromis lifalili

fishfreshwater
5″·30+ gal·aggressive
fish
easy

Red Lizard Catfish

Rineloricaria sp. L010a

fishfreshwater
5″·30+ gal·peaceful
fish
medium

Red Melon Badis

Dario hysginon

fishfreshwater
0.8″·10+ gal·peaceful
fish
medium

Red Neon Blue Eye

Pseudomugil luminatus

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

Red Oscar

Astronotus ocellatus

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

Red Phantom Tetra

Megalamphodus sweglesi

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

Red Platy

Xiphophorus maculatus

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

Red Rainbowfish

Glossolepis incisus

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

Red Swordtail

Xiphophorus hellerii

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

Red Tail Catfish

Phractocephalus hemioliopterus

fishfreshwater
48″·1000+ gal·aggressive
fish
hard

Red Turquoise Discus

Symphysodon sp.

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

Red Wag Platy

Xiphophorus maculatus

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

Red Wagtail Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 5+·peaceful
fish
medium

Red Zebra Cichlid

Maylandia estherae

fishfreshwater
5.5″·55+ gal·aggressive
fish
medium

Red-Bellied Piranha

Pygocentrus nattereri

fishfreshwater
13″·100+ gal·group 5+·aggressive
fish
medium

Red-Striped Killifish

Aphyosemion striatum

fishfreshwater
1.5″·10+ gal·peaceful
fish
medium

Red-Tailed Black Shark

Epalzeorhynchos bicolor

fishfreshwater
5″·55+ gal·semi-aggr.
fish
easy

Red-Tailed Rasbora

Rasbora borapetensis

fishfreshwater
2″·20+ gal·group 6+·peaceful
fish
easy

Redbreast Acara

Laetacara dorsigera

fishfreshwater
2.5″·20+ gal·peaceful
fish
easy

Redline Dwarf Rasbora

Microrasbora rubescens

fishfreshwater
1″·10+ gal·group 6+·peaceful
fish
easy

Redline Rasbora

Rasbora pauciperforata

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

Redtail Botia

Yasuhikotakia modesta

fishfreshwater
5″·75+ gal·group 3+·semi-aggr.
fish
easy

Redtail Goodeid

Xenotoca eiseni

fishfreshwater
2.5″·20+ gal·group 6+·peaceful
fish
expert

Regal Angelfish

Pygoplites diacanthus

fishsaltwater
10″·100+ gal·semi-aggr.
fish
easy

Reticulatus Corydoras

Corydoras reticulatus

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

Ricefish

Oryzias woworae

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

Rope Fish

Erpetoichthys calabaricus

fishfreshwater
15″·55+ gal·peaceful
fish
medium

Rosetail Betta

Betta splendens 'Rosetail'

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

Rosy Barb

Pethia conchonius

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

Rosy Loach

Petruichthys sp. rosy

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

Rosy Tetra

Hyphessobrycon rosaceus

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

Roundtail Paradisefish

Macropodus ocellatus

fishfreshwater
2.5″·10+ gal·semi-aggr.
fish
easy

Royal Gramma

Gramma loreto

fishsaltwater
3″·30+ gal·semi-aggr.