Shoal & Stem

Species Catalogue

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

snail
medium

Pagoda Snail

Brotia pagodula

snailfreshwater
1.2″·10+ gal·peaceful
shrimp
easy

Painted Fire Red Shrimp

Neocaridina davidi

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

Pajama Cardinalfish

Sphaeramia nematoptera

fishsaltwater
3.5″·30+ gal·group 3+·peaceful
fish
medium

Palmas Bichir

Polypterus palmas

fishfreshwater
12″·55+ gal·semi-aggr.
fish
expert

Palmqvist's Notho

Nothobranchius palmqvisti

fishfreshwater
1.5″·5+ gal·semi-aggr.
coral
easy

Palythoa

Palythoa grandis

coralsaltwater
2″·30+ gal·peaceful
fish
medium

Panda Dwarf Cichlid

Apistogramma nijsseni

fishfreshwater
2.5″·20+ gal·semi-aggr.
fish
medium

Panda Garra

Garra flavatra

fishfreshwater
3.5″·30+ gal·group 4+·peaceful
fish
easy

Panda Platy

Xiphophorus maculatus

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

Panda Shrimp

Caridina cantonensis

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

Panda Tetra

Aphyocharax paraguayensis

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

Panduro Dwarf Cichlid

Apistogramma panduro

fishfreshwater
2.5″·20+ gal·semi-aggr.
crab
medium

Panther Crab

Parathelphusa pantherina

crabfreshwater
3″·20+ gal·semi-aggr.
fish
easy

Paradise Fish

Macropodus opercularis

fishfreshwater
4″·20+ gal·aggressive
fish
easy

Parkinsoni Rainbowfish

Melanotaenia parkinsoni

fishfreshwater
4.5″·30+ gal·group 6+·peaceful
fish
easy

Paskai Rainbowfish

Pseudomugil paskai

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

Pea Puffer

Carinotetraodon travancoricus

fishfreshwater
1.5″·10+ gal·aggressive
fish
medium

Peaceful Betta

Betta imbellis

fishfreshwater
2.5″·10+ gal·peaceful
fish
hard

Peacock Bass

Cichla ocellaris

fishfreshwater
24″·200+ gal·aggressive
fish
medium

Peacock Cichlid

Aulonocara spp.

fishfreshwater
6″·55+ gal·semi-aggr.
fish
medium

Peacock Eel

Macrognathus siamensis

fishfreshwater
12″·35+ gal·peaceful
fish
easy

Peacock Endler

Poecilia wingei

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

Peacock Gudgeon

Tateurndina ocellicauda

fishfreshwater
3″·15+ gal·group 2+·peaceful
plant
easy

Peacock Moss

Taxiphyllum sp. 'Peacock'

plantfreshwater
Carpet·Low–Medium light·Moderate growth
algae
medium

Peacock's Tail

Padina pavonica

algaesaltwater

Fan-shaped brown-grey macroalgae with distinctive concentric rings and a lightly calcified surface. Grows on rock in moderate flow zones. Not commonly traded but attractive in display refugia. Tolerates a wide range of temperatures — found from Mediterranean rock pools to tropical reefs.

fish
easy

Pearl Danio

Danio albolineatus

fishfreshwater
2.5″·15+ gal·group 6+·peaceful
fish
easy

Pearl Gourami

Trichopodus leerii

fishfreshwater
5″·30+ gal·peaceful
fish
medium

Pearlscale Angelfish

Pterophyllum scalare

fishfreshwater
6″·30+ gal·group 2+·semi-aggr.
fish
medium

Pearlscale Goldfish

Carassius auratus

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

Penguin Tetra

Thayeria boehlkei

fishfreshwater
2.5″·20+ gal·group 6+·peaceful
shrimp
easy

Peppermint Shrimp

Lysmata wurdemanni

shrimpsaltwater
2″·20+ gal·group 3+·peaceful
plant
medium

Persicaria Kawagoeanum

Persicaria kawagoeanum

plantfreshwater
Background·High light·Slow–moderate growth
plant
medium

Persicaria São Paulo

Persicaria sp. 'São Paulo'

plantfreshwater
Background·Fast growth
fish
medium

Petricola Catfish

Synodontis petricola

fishfreshwater
4″·30+ gal·group 3+·peaceful
plant
easy

Philippine Java Fern

Leptochilus decurrens

plantfreshwater
Epiphyte·Slow growth
fish
easy

Phoenix Rasbora

Boraras merah

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