Shoal & Stem

Species Catalogue

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

fish
easy

Platinum Guppy

Poecilia reticulata

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

Platinum Molly

Poecilia sphenops

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

Polystictus Corydoras

Corydoras polystictus

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

Pond Snail

Lymnaea stagnalis

snailfreshwater
2″·10+ gal·peaceful
fish
easy

Porthole Catfish

Dianema urostriata

fishfreshwater
4″·30+ gal·group 4+·peaceful
coral
easy

Pulsing Xenia

Xenia spp.

coralsaltwater
2″·30+ gal·peaceful
shrimp
easy

Pumpkin Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
fish
easy

Purple Firefish

Nemateleotris decora

fishsaltwater
3.5″·20+ gal·group 2+·peaceful
snail
easy

Purple Mystery Snail

Pomacea bridgesii

snailfreshwater
2″·5+ gal·peaceful
shrimp
easy

Purple Neocaridina

Neocaridina davidi

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
plant
easy

Purple-backed Duckweed

Ricciocarpus natans

plantfreshwater
Floating·Fast growth
plant
easy

Pygmy Chain Sword Red

Helanthium tenellum 'Red'

plantfreshwater
Foreground·Moderate growth
fish
easy

Pygmy Rasbora

Boraras maculatus

fishfreshwater
0.8″·5+ gal·group 8+·peaceful
fish
easy

Queen Danio

Devario regina

fishfreshwater
2.5″·25+ gal·group 6+·peaceful
fish
easy

Rabauti Corydoras

Corydoras rabauti

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

Rainbow Platy

Xiphophorus maculatus

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

Ramshorn Snail

Planorbarius corneus

snailfreshwater
0.75″·5+ gal·peaceful
shrimp
easy

Red Babaulti Shrimp

Caridina babaulti

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
fish
easy

Red Chest Endler

Poecilia wingei

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

Red Devil Molly

Poecilia sphenops

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

Red Dwarf Gourami

Trichogaster lalius

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

Red Eye Tetra

Moenkhausia sanctaefilomenae

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

Red Flame Sword

Echinodorus sp. 'Red Flame'

plantfreshwater
Midground·Moderate growth
algae
easy

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.

fish
easy

Red Jewel Cichlid

Hemichromis lifalili

fishfreshwater
5″·30+ gal·aggressive
snail
easy

Red Lip Nerite Snail

Neritina waigiensis

snailfreshwater
0.75″·5+ gal·peaceful
fish
easy

Red Lizard Catfish

Rineloricaria sp. L010a

fishfreshwater
5″·30+ gal·peaceful
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
snail
easy

Red Ramshorn Snail

Planorbarius corneus

snailfreshwater
0.75″·5+ gal·peaceful
shrimp
easy

Red Rili Shrimp

Neocaridina davidi

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

Red Spot Nerite Snail

Clithon diadema

snailfreshwater
0.75″·5+ gal·peaceful
invertebrate
easy

Red Swamp Crayfish

Procambarus clarkii

invertebratefreshwater
5.5″·20+ gal·aggressive
fish
easy

Red Swordtail

Xiphophorus hellerii

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

Red Wag Platy

Xiphophorus maculatus

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