Shoal & Stem

Species Catalogue

1,492 species — care guides, community photos, water parameters, and tank-mate compatibility.

fish
easy

Porthole Catfish

Dianema urostriata

fishfreshwater
4″·30+ gal·group 4+·peaceful
shrimp
medium

Poso Orange Shrimp

Caridina glaubrechti

shrimpfreshwater
1.2″·10+ gal·group 6+·peaceful
plant
medium

Potamogeton Octandrus

Potamogeton octandrus

plantfreshwater
Midground·Moderate growth
fish
hard

Potter's Angelfish

Centropyge potteri

fishsaltwater
5″·55+ gal·semi-aggr.
fish
medium

Powder Blue Dwarf Gourami

Trichogaster lalius

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

Powder Blue Tang

Acanthurus leucosternon

fishsaltwater
9″·100+ gal·semi-aggr.
fish
easy

Pretty Tetra

Hemigrammus pulcher

fishfreshwater
1.75″·20+ gal·group 6+·peaceful
plant
medium

Proserpinaca Palustris

Proserpinaca palustris

plantfreshwater
Background·High light·Moderate growth
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
plant
hard

Purple Ludwigia

Ludwigia glandulosa

plantfreshwater
Midground
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
coral
medium

Purple Sea Fan

Gorgonia ventalina

coralsaltwater
2″·30+ gal·peaceful
fish
medium

Purple Tang

Zebrasoma xanthurum

fishsaltwater
8″·75+ gal·semi-aggr.
plant
easy

Purple-backed Duckweed

Ricciocarpus natans

plantfreshwater
Floating·Fast growth
plant
medium

Pygmy Chain Sword

Echinodorus tenellus

plantfreshwater
Carpet·Medium to high light·Moderate growth
plant
easy

Pygmy Chain Sword Red

Helanthium tenellum 'Red'

plantfreshwater
Foreground·Moderate growth
fish
medium

Pygmy Hatchetfish

Carnegiella myersi

fishfreshwater
1″·10+ gal·group 8+·peaceful
fish
easy

Pygmy Rasbora

Boraras maculatus

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

Queen Angelfish

Holacanthus ciliaris

fishsaltwater
18″·250+ gal·semi-aggr.
fish
easy

Queen Danio

Devario regina

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

Queen Loach

Botia dario

fishfreshwater
5″·40+ gal·group 3+·semi-aggr.
plant
medium

Queen Moss

Hydropogonella gymnostoma

plantfreshwater
Epiphyte·Slow growth
plant
medium

Quillwort

Isoetes velata

plantfreshwater
Foreground·Slow growth
fish
easy

Rabauti Corydoras

Corydoras rabauti

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

Raccoon Butterflyfish

Chaetodon lunula

fishsaltwater
8″·75+ gal·peaceful
fish
medium

Rainbow Cichlid

Herotilapia multispinosa

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

Rainbow Crab

Cardisoma armatum

crabfreshwater
5″·40+ gal·aggressive
fish
medium

Rainbow Emperor Tetra

Nematobrycon lacortei

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

Rainbow Platy

Xiphophorus maculatus

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

Rainbow Shark

Epalzeorhynchos frenatum

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

Ramshorn Snail

Planorbarius corneus

snailfreshwater
0.75″·5+ gal·peaceful
fish
medium

Ranchu Goldfish

Carassius auratus

fishfreshwater
7″·20+ gal·peaceful
fish
medium

Red Arc Pencilfish

Nannostomus rubrocaudatus

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